2021
$12.95
$35.00
2020
$30.00
$60.00
September 2020
$45.00
$65.00
$55.00
February 2019
$40.00
$20.00
November 2019
$80.00
November 2018
$3.97
$75.00
November 2019 (third edition)
$39.99
November 2019 (Third edition)
$25.00
2019
2006
$49.95
$17.95
$56.00
2018
$19.95
$45.95
March 2020
2016
2015
$50.00
$200.00
$39.95
2007
$14.95
$59.95
October 2018
$100.00
2003
$70.00
$39.00
$27.95
2011
$23.96
$52.00
2017
$15.00
$24.95
$29.95
2013
$22.00
$69.95
$14.00
2014
$89.95
2012
1991
$5.00
$53.00
2010
1999, sixth edition
2002
1989
$90.00
$150.00
$34.95
2002; reprinted 2016
$95.00
$18.95
1995
2008
$29.50
2004
$68.00
2005
2000
$1,000.00
$28.00
2009
$85.00
$24.50
1998
$175.00
1999
1994
$33.00
$27.50
2013. Reprint edition 2015
$128.00
$120.00