Coaching for Improved Work Performance, Revised Edition | Price history
Price change log
11/05/2023: $14.33
10/30/2023: $14.28
10/28/2023: $14.3
10/24/2023: $14.27
10/16/2023: $14.33
09/27/2023: $14.78
09/26/2023: $16.26
09/25/2023: $15.24
09/24/2023: $14.61
09/09/2023: $17.3
08/23/2023: $18.25
07/16/2023: $24
07/10/2023: $13.36
06/29/2023: $13.41
05/10/2023: $9.99
05/03/2023: $19.44
04/26/2023: $19.21
04/18/2023: $18.27
04/05/2023: $20.24
03/16/2023: $21.3
03/14/2023: $20.85
03/13/2023: $20.14
03/11/2023: $19.78
03/08/2023: $19.06
03/07/2023: $18.73
02/24/2023: $20.52
02/15/2023: $22.8
02/13/2023: $24
02/08/2023: $22.08
02/06/2023: $24
01/31/2023: $21.29
01/30/2023: $20.79
01/26/2023: $19.8
01/23/2023: $19.46
01/22/2023: $19.38
01/18/2023: $20.52
01/16/2023: $22.8
12/22/2022: $24
12/20/2022: $19.37
12/19/2022: $24
12/18/2022: $18.79
12/05/2022: $18.37
12/01/2022: $17.4
11/28/2022: $17.36
11/21/2022: $18.44
11/16/2022: $20.49
11/02/2022: $24
11/01/2022: $20.49
10/29/2022: $20.29
10/28/2022: $20.18
10/27/2022: $20.08
10/26/2022: $19.98
10/14/2022: $19.91
10/13/2022: $19.8
10/10/2022: $19.76
09/28/2022: $20.97
09/27/2022: $19.64
09/26/2022: $19.41
09/20/2022: $19.2
09/08/2022: $19.02
09/07/2022: $19.39
09/06/2022: $20.41
08/30/2022: $21.53
08/29/2022: $22.24
08/23/2022: $22.27
08/22/2022: $22.08
08/19/2022: $21.63
08/16/2022: $21.67
08/09/2022: $21.91
08/08/2022: $21.86
08/03/2022: $21.54
08/02/2022: $21.59
07/30/2022: $21.88
07/26/2022: $21.93
07/24/2022: $22.63
07/23/2022: $23
07/19/2022: $23.05
07/12/2022: $24
07/10/2022: $23.06
07/09/2022: $23.12
07/05/2022: $23.28
06/25/2022: $24
06/21/2022: $19.43
06/18/2022: $22
06/13/2022: $23.04
06/11/2022: $23.01
06/10/2022: $23.05
06/09/2022: $23.08
06/08/2022: $23.13
06/07/2022: $23.2
06/06/2022: $23.27
06/04/2022: $23.37
05/31/2022: $23.52
05/28/2022: $24
05/26/2022: $23.46
05/24/2022: $22.78
05/19/2022: $22.55
05/18/2022: $22.42
05/17/2022: $22.49
05/13/2022: $22.55
05/12/2022: $22.58
05/09/2022: $22.79
05/05/2022: $22.84
05/03/2022: $23.29
04/27/2022: $23.52
04/26/2022: $24
04/23/2022: $23.28
04/21/2022: $24
04/20/2022: $23.02
04/16/2022: $22.79
04/15/2022: $22.82
04/14/2022: $22.95
04/13/2022: $23.13
04/12/2022: $23.21
04/05/2022: $23.26
03/28/2022: $23.49
03/23/2022: $23.26
03/22/2022: $22.72
03/21/2022: $23.03
03/18/2022: $23.4
03/16/2022: $23.37
01/22/2022: $23.49
01/21/2022: $17.41
01/20/2022: $17.56
01/16/2022: $17.62
01/15/2022: $16.2
01/14/2022: $15.85
01/13/2022: $18.13
01/12/2022: $19.4
01/06/2022: $23.49
12/17/2021: $17.66
12/16/2021: $17.58
12/10/2021: $17.66
12/09/2021: $18.53
12/08/2021: $18.56
12/07/2021: $18.78
11/30/2021: $23.49
11/27/2021: $20.98
11/25/2021: $23.49
11/17/2021: $21
11/15/2021: $21.99
11/14/2021: $19.54
11/13/2021: $21.99
11/12/2021: $19.74
11/11/2021: $19.84
11/09/2021: $21
11/08/2021: $18.03
11/07/2021: $18.14
11/06/2021: $19.15
11/05/2021: $19.46
11/04/2021: $20.12
11/03/2021: $20.32
11/02/2021: $21
11/01/2021: $20.7
10/27/2021: $21
10/26/2021: $17.95
10/25/2021: $18.21
10/12/2021: $17.56
10/11/2021: $17.13
10/04/2021: $17.56
10/01/2021: $19.74
09/24/2021: $17.52
09/21/2021: $20.79
09/19/2021: $21
09/05/2021: $17.47
09/04/2021: $19.66
09/03/2021: $19.62
09/02/2021: $16.68
09/01/2021: $19.8
08/29/2021: $21
08/26/2021: $18.81
08/25/2021: $19.43
08/01/2021: $21
07/28/2021: $18.9
07/23/2021: $21
07/22/2021: $20.59
07/08/2021: $21
06/23/2021: $15.53
06/20/2021: $17.44
06/10/2021: $17.67
05/27/2021: $17.84
04/30/2021: $18.9
04/29/2021: $18.26
04/28/2021: $18.9
04/27/2021: $18.36
04/26/2021: $18.9
04/25/2021: $16.06
04/23/2021: $16.13
04/22/2021: $16.19
04/19/2021: $16.15
04/18/2021: $17.76
04/01/2021: $18.9
03/31/2021: $16.71
03/30/2021: $18.9
03/29/2021: $17.63
03/28/2021: $17.83
03/27/2021: $18.8
03/26/2021: $18.85
03/23/2021: $18.26
03/21/2021: $18.9
03/14/2021: $15.32
03/13/2021: $16.53
03/05/2021: $15.17
03/04/2021: $15.32
02/26/2021: $18.74
02/23/2021: $18.9
02/22/2021: $18.25
10/29/2020: $18.9
10/19/2020: $16.83
10/10/2020: $14.61
10/01/2020: $16.29
09/19/2020: $18.9
09/18/2020: $18.17
08/26/2020: $18.9
08/13/2020: $14.68
08/07/2020: $13.95
06/12/2020: $13.39
06/08/2020: $13.24
06/02/2020: $13.39
04/29/2020: $13.34
01/13/2020: $12.69
12/05/2019: $12.64
11/17/2019: $13.49
11/12/2019: $13.41
10/22/2019: $13.66
10/06/2019: $13.99
09/05/2019: $13.46
09/04/2019: $12.13
08/15/2019: $13.46
08/12/2019: $13.41
07/24/2019: $12.95
07/11/2019: $14.95
07/07/2019: $19.95
06/28/2019: $20.36
06/20/2019: $17.63
06/17/2019: $12.63
06/15/2019: $12.73
06/10/2019: $13.75
06/08/2019: $14.95
06/04/2019: $14.57
05/29/2019: $14.95
05/28/2019: $13.79
05/16/2019: $14.95
05/04/2019: $15.25
04/14/2019: $15.36
03/21/2019: $15.88
03/18/2019: $16.72
03/14/2019: $17.65
03/11/2019: $15.11
03/10/2019: $15.54
03/09/2019: $15.44
03/08/2019: $15.63
03/07/2019: $15.97
03/06/2019: $16.31
02/28/2019: $16.54
02/27/2019: $17.35
02/26/2019: $16.54
02/25/2019: $17.35
02/22/2019: $16.52
02/21/2019: $13.68
02/19/2019: $16.47
02/16/2019: $16.54
02/13/2019: $20.41
02/09/2019: $21
02/08/2019: $14.71
02/05/2019: $12.83
02/04/2019: $13.02
02/03/2019: $13.1
02/02/2019: $13.19
02/01/2019: $13.25
01/31/2019: $13.32
01/30/2019: $13.88
01/29/2019: $16.03
01/24/2019: $19.04
01/17/2019: $18.41
01/06/2019: $17.65
01/04/2019: $17.39
01/03/2019: $17.01
12/31/2018: $17.39
12/29/2018: $18.36
12/23/2018: $18.41
12/22/2018: $21
12/21/2018: $16.28
12/20/2018: $17.37
12/17/2018: $16.34
12/16/2018: $16.5
12/15/2018: $16.4
12/14/2018: $17.79
12/13/2018: $20.65
12/12/2018: $21
12/11/2018: $17.32
11/27/2018: $21
11/16/2018: $12.24
11/10/2018: $16.54
11/03/2018: $16.49
11/02/2018: $17.04
10/26/2018: $16.48
10/23/2018: $16.94
10/22/2018: $15.68
10/21/2018: $16.94
10/19/2018: $21
10/15/2018: $17.04
09/27/2018: $21
05/24/2018: $11.58
05/19/2018: $11.14
05/18/2018: $11.36
05/17/2018: $11.14
05/13/2018: $11.36
05/03/2018: $10.93
05/02/2018: $10.96
04/30/2018: $11
04/20/2018: $11.24
04/08/2018: $11.03
03/28/2018: $12.25
03/27/2018: $12.32
03/26/2018: $12.81
03/25/2018: $12.32
03/21/2018: $14.99
03/20/2018: $13
03/14/2018: $11.09
02/01/2018: $9.05
01/16/2018: $12.04
12/22/2017: $12.29
12/16/2017: $12.51
12/14/2017: $12.99
12/12/2017: $12.39
12/11/2017: $12.99
11/20/2017: $13.59
11/09/2017: $13.69
11/08/2017: $13.43
10/31/2017: $13.17
10/30/2017: $12.98
10/24/2017: $12.73
10/23/2017: $15.24
10/22/2017: $16.55
10/19/2017: $12.73
10/15/2017: $13.17
10/14/2017: $11.82
10/10/2017: $15.24
10/09/2017: $15.78
10/05/2017: $14.41
10/02/2017: $15
10/01/2017: $12.94
09/30/2017: $13.14
09/29/2017: $13.29
09/25/2017: $12.24
09/24/2017: $13.12
09/21/2017: $12.87
09/20/2017: $11.59
09/14/2017: $12.62
09/13/2017: $11.87
09/12/2017: $11.92
09/11/2017: $11.95
09/10/2017: $12.01
09/09/2017: $12.04
09/08/2017: $12.07
09/07/2017: $12.12
09/05/2017: $12.2
09/03/2017: $12.26
09/01/2017: $12.32
08/31/2017: $12.35
08/30/2017: $12.43
08/29/2017: $12.54
08/28/2017: $12.65
08/27/2017: $12.77
08/26/2017: $12.9
08/25/2017: $12.97
08/24/2017: $13.05
08/23/2017: $13.12
08/19/2017: $13.17
08/18/2017: $11.44
08/16/2017: $12.92
08/10/2017: $13.17
08/07/2017: $14.23
08/05/2017: $13.69
07/23/2017: $13.17
07/22/2017: $12.17
07/08/2017: $12.62
07/07/2017: $11.86
07/04/2017: $12.62
07/03/2017: $12.17
07/02/2017: $12.62
06/29/2017: $12.17
06/28/2017: $11.41
06/24/2017: $12.62
06/15/2017: $12.14
06/07/2017: $11.91
06/02/2017: $11.55
06/01/2017: $11.61
05/09/2017: $11.68
05/04/2017: $11.62
05/02/2017: $11.68
05/01/2017: $11.18
04/30/2017: $11.22
04/29/2017: $10.96
04/28/2017: $11.4
04/27/2017: $11.35
04/20/2017: $11.68
04/18/2017: $11.38
03/30/2017: $11.68
01/30/2017: $11.97
01/25/2017: $11.68
01/20/2017: $11.46
01/17/2017: $11.24
01/05/2017: $11.03
12/29/2016: $10.82
12/20/2016: $10.61
12/06/2016: $9.74
10/01/2016: $12.18
09/25/2016: $11.97
09/07/2016: $12.16
08/29/2016: $11.93
08/25/2016: $12.05
08/21/2016: $12.18
08/18/2016: $12.39
08/14/2016: $12.15
08/09/2016: $11.92
08/04/2016: $11.69
07/31/2016: $11.81
07/26/2016: $11.93
07/22/2016: $12.05
07/17/2016: $12.18
07/11/2016: $11.95
07/06/2016: $11.72
07/02/2016: $11.49
06/24/2016: $11.27
06/17/2016: $11.05
06/12/2016: $10.63
06/08/2016: $10.85
05/29/2016: $10.42
05/25/2016: $10.97
05/21/2016: $11.03
05/17/2016: $11.62
05/12/2016: $12.24
05/07/2016: $12.89
04/27/2016: $13.5
04/22/2016: $13.57
04/18/2016: $14.49
04/02/2016: $14.29
03/25/2016: $10.15
03/21/2016: $10.1
03/16/2016: $10.05
03/10/2016: $10
02/26/2016: $10.03
02/21/2016: $10.15
02/14/2016: $10.22
01/21/2016: $10.3
01/17/2016: $10.58
01/13/2016: $11.14
01/07/2016: $11.73
12/27/2015: $12.35
12/16/2015: $12.87
12/06/2015: $12.75
11/26/2015: $12.63
11/22/2015: $12.76
11/17/2015: $12.89
11/13/2015: $13.02
11/08/2015: $12.9
11/03/2015: $12.78
10/29/2015: $12.66
10/25/2015: $12.54
10/20/2015: $12.42
10/16/2015: $12.3
10/11/2015: $12.43
10/06/2015: $12.56
10/01/2015: $12.69
09/24/2015: $12.57
09/20/2015: $12.51
09/06/2015: $12.45
08/26/2015: $12.39
08/21/2015: $12.91
08/16/2015: $12.79
08/12/2015: $12.67
08/08/2015: $12.55
08/03/2015: $12.43
07/30/2015: $12.95
07/25/2015: $13.49
07/20/2015: $13.43
07/16/2015: $13.57
07/11/2015: $13.71
07/06/2015: $13.44
07/02/2015: $13.58
06/27/2015: $13.45
06/22/2015: $13.59
06/19/2015: $13.73
06/15/2015: $13.87
06/12/2015: $13.74
05/23/2015: $13.64
04/30/2015: $13.54
04/05/2015: $13.41
03/26/2015: $12.47
02/24/2015: $11.94
02/06/2015: $11.83
01/27/2015: $11.55
01/22/2015: $11.61
01/18/2015: $11.67
01/13/2015: $11.73
01/09/2015: $11.79
01/04/2015: $11.85
12/31/2014: $11.92
12/22/2014: $11.99
12/12/2014: $12.05
12/08/2014: $12.18
11/28/2014: $12.31
11/22/2014: $12.19
11/18/2014: $11.73
11/15/2014: $11.96
11/09/2014: $11.62
11/04/2014: $11.51
10/24/2014: $11.4
10/21/2014: $11.44
10/15/2014: $11.56
10/14/2014: $11.28
10/12/2014: $11.01
10/10/2014: $11.28
10/09/2014: $11.01
09/18/2014: $12.65
09/14/2014: $12.62
09/11/2014: $12.56
09/03/2014: $12.5
08/27/2014: $12.45
08/23/2014: $12.39
08/16/2014: $12.52
07/26/2014: $12.65
07/20/2014: $12.38
07/16/2014: $12.26
07/12/2014: $12.39
07/07/2014: $12.52
06/27/2014: $12.65
06/25/2014: $12.54
06/23/2014: $12.42
06/18/2014: $12.3
06/15/2014: $12.18
06/13/2014: $12.06
06/07/2014: $11.77
06/01/2014: $11.74
05/28/2014: $11.63
05/22/2014: $11.75
05/18/2014: $11.87
05/14/2014: $11.99
05/09/2014: $12.12
05/05/2014: $12.25
04/30/2014: $12.38
04/25/2014: $12.26
04/20/2014: $12.39
04/16/2014: $12.52
03/11/2014: $12.63
03/08/2014: $12.51
03/05/2014: $12.39
03/04/2014: $12.52
02/11/2014: $12.65
02/07/2014: $12.61
02/04/2014: $12.49
01/31/2014: $12.37
01/27/2014: $12.44
01/23/2014: $12.51
01/20/2014: $12.58
01/15/2014: $12.65
01/10/2014: $11.83
01/03/2014: $11.89
12/30/2013: $11.95
12/25/2013: $12.02
12/21/2013: $12.09
12/19/2013: $11.97
12/13/2013: $11.86
12/11/2013: $11.75
12/07/2013: $11.64
12/03/2013: $11.53
11/30/2013: $11.42
11/27/2013: $11.54
11/26/2013: $11.66
11/24/2013: $11.78
11/21/2013: $11.9
11/19/2013: $12.02
10/05/2013: $12.15
10/03/2013: $10.96
10/02/2013: $10.86
10/01/2013: $10.76
09/30/2013: $10.66
09/27/2013: $10.88
09/25/2013: $10.99
09/12/2013: $11.23
09/11/2013: $11.12
09/07/2013: $10.72
09/05/2013: $10.52
09/03/2013: $10.42
09/01/2013: $10.32
08/30/2013: $10.12
08/29/2013: $10.02
08/27/2013: $9.93
08/26/2013: $9.84
08/25/2013: $9.75
08/24/2013: $9.66
08/23/2013: $9.57
08/22/2013: $9.48
08/21/2013: $9.58
08/20/2013: $9.68
08/19/2013: $9.78
08/17/2013: $9.88
08/15/2013: $9.99
08/12/2013: $9.9
08/11/2013: $9.81
08/10/2013: $9.91
08/09/2013: $10.02
08/08/2013: $10.13
08/06/2013: $10.24
08/05/2013: $10.35
08/04/2013: $10.46
08/03/2013: $10.57
08/01/2013: $10.68
07/31/2013: $10.79
07/30/2013: $10.9
07/26/2013: $11.01
07/25/2013: $11.13
07/24/2013: $11.25
07/23/2013: $11.37
07/22/2013: $11.49
07/21/2013: $11.61
07/20/2013: $11.5
07/19/2013: $11.39
07/17/2013: $11.28
07/15/2013: $11.4
07/14/2013: $11.52
07/13/2013: $11.64
07/12/2013: $11.76
07/11/2013: $11.88
07/08/2013: $11.77
07/07/2013: $11.69
07/06/2013: $11.58
07/05/2013: $11.47
07/03/2013: $11.36
07/02/2013: $11.25
07/01/2013: $11.14
06/29/2013: $11.04
06/28/2013: $11
06/24/2013: $10.81
06/22/2013: $11.04
06/20/2013: $11.16
06/19/2013: $11.28
06/13/2013: $11.39
06/12/2013: $11.28
06/11/2013: $11.17
06/10/2013: $11.29
06/04/2013: $11.41
06/03/2013: $11.53
06/02/2013: $11.65
05/31/2013: $11.77
05/29/2013: $11.67
05/28/2013: $11.56
05/27/2013: $11.45
05/26/2013: $11.34
05/25/2013: $11.23
05/24/2013: $11.12
05/23/2013: $11.02
05/22/2013: $10.92
05/20/2013: $10.82
05/19/2013: $10.72
05/18/2013: $10.62
05/17/2013: $10.52
05/16/2013: $10.42
05/15/2013: $10.32
05/13/2013: $10.22
05/12/2013: $10.12
05/11/2013: $10.02
05/09/2013: $9.93
05/08/2013: $10.04
05/07/2013: $9.95
05/06/2013: $9.86
05/04/2013: $9.77
05/03/2013: $9.68
05/01/2013: $9.59
04/30/2013: $9.5
04/29/2013: $9.41
04/27/2013: $9.32
04/25/2013: $9.14
04/23/2013: $9.05
04/22/2013: $12.15
04/21/2013: $12.09
04/19/2013: $11.97
04/18/2013: $11.86
04/17/2013: $11.75
04/15/2013: $11.64
04/14/2013: $11.53
04/13/2013: $11.42
04/11/2013: $11.54
04/10/2013: $11.66
04/08/2013: $11.78
04/07/2013: $12.15
04/05/2013: $11.46
04/03/2013: $9.01
03/31/2013: $8.75
03/19/2013: $11.53
03/17/2013: $11.42
03/15/2013: $11.31
03/14/2013: $11.2
03/11/2013: $11.09
03/04/2013: $10.98
03/01/2013: $10.89
02/27/2013: $10.79
02/24/2013: $10.69
02/23/2013: $10.59
02/21/2013: $10.49
02/20/2013: $10.39
02/19/2013: $10.29
02/18/2013: $10.19
02/16/2013: $10.09
02/14/2013: $9.99
02/13/2013: $9.9
02/11/2013: $9.81
02/10/2013: $9.72
02/09/2013: $9.63
02/07/2013: $9.54
02/06/2013: $9.45
02/05/2013: $9.36
02/04/2013: $9.41
02/03/2013: $9.27
01/30/2013: $9.32
01/29/2013: $9.37
01/27/2013: $9.42
01/26/2013: $9.47
01/25/2013: $9.52
01/23/2013: $9.57
01/22/2013: $9.62
01/21/2013: $9.67
01/19/2013: $9.72
01/18/2013: $9.77
01/16/2013: $9.82
01/12/2013: $9.87
01/10/2013: $9.92
01/09/2013: $9.98
01/06/2013: $10.03
01/05/2013: $10.09
01/04/2013: $10.15
01/02/2013: $10.21
12/31/2012: $10.27
12/29/2012: $10.33
12/27/2012: $10.39
12/26/2012: $10.45
12/24/2012: $10.51
12/23/2012: $10.57
12/20/2012: $10.68
12/19/2012: $10.79
12/17/2012: $10.9
12/16/2012: $11.01
12/14/2012: $11.13
12/12/2012: $11.25
12/10/2012: $11.37
12/09/2012: $11.49
12/07/2012: $11.4
12/05/2012: $11.29
12/04/2012: $11.41
12/02/2012: $11.53
11/30/2012: $11.49
11/28/2012: $11.41
11/27/2012: $12.37
11/26/2012: $11.53
11/24/2012: $11.49
11/22/2012: $11.38
11/20/2012: $11.27
11/18/2012: $11.04
11/17/2012: $11.16
11/15/2012: $11.28
11/13/2012: $11.4
11/12/2012: $11.29
11/11/2012: $11.41
10/13/2012: $11.51
10/06/2012: $11.4
10/05/2012: $11.29
10/02/2012: $11.41
09/27/2012: $11.53
09/26/2012: $10.37
09/23/2012: $10.48
09/22/2012: $10.59
09/20/2012: $10.7
09/18/2012: $10.6
09/17/2012: $10.5
09/11/2012: $10.2
09/09/2012: $10.1
09/08/2012: $10
09/06/2012: $10.11
09/01/2012: $10.22
08/30/2012: $10.33
08/28/2012: $10.44
08/27/2012: $10.55
08/24/2012: $10.66
08/16/2012: $10.56
08/15/2012: $10.46
08/13/2012: $10.57
08/11/2012: $10.68
08/09/2012: $10.79
08/05/2012: $10.9
08/03/2012: $11.01
08/01/2012: $11.13
07/26/2012: $11.25
07/22/2012: $11.37
07/12/2012: $11.26
07/06/2012: $11.15
06/30/2012: $11.27
06/25/2012: $11.39
06/23/2012: $11.28
06/16/2012: $11.17
06/08/2012: $11.29
06/07/2012: $11.52
06/04/2012: $11.41
05/10/2012: $11.53
05/02/2012: $11.43
04/25/2012: $11.32
04/19/2012: $11.21
04/11/2012: $11.1
04/05/2012: $10.99
03/31/2012: $10.89
03/22/2012: $10.79
03/15/2012: $10.69
03/04/2012: $10.59
02/25/2012: $10.49
02/17/2012: $10.39
02/12/2012: $10.29
02/07/2012: $10.19
02/04/2012: $10.03
01/25/2012: $10.09
01/21/2012: $10.15
01/15/2012: $10.21
01/06/2012: $10.75
12/24/2011: $11.32
12/14/2011: $11.52
12/04/2011: $11.41
11/19/2011: $11.53
10/23/2011: $9.37
08/24/2011: $8.94
08/16/2011: $8.53
08/12/2011: $8.94
08/05/2011: $9.48
07/14/2011: $10.53
06/18/2011: $10.47
06/07/2011: $10.41
04/08/2011: $10.35
03/27/2011: $9.56
03/24/2011: $9.49