Taylor, Shelley E., author
McGraw-Hill, 1995
Buku Teks
Kuther, Tara L., editor
Thomson, 2006
Buku Teks
Wierzbicki, Michael
Allyn and Bacon, 1993
Buku Teks
editor-in-chief, Thomas J. Boll; volume editors, Suzanne Bennett Johnson, Nathan W. Perry, Jr., and Ronald H. Rozensky.
American Psychological Association, 2004
Buku Teks
Richterich, Rene, author
John Wiley & Sons, 1978
Buku Teks