Stephen N. Elliot [and others]
McGraw-Hill, 2000
Buku Teks
Stephen N. Elliot, Thomas R. Kratochwill, Joan Littlefield Cook, John F. Travers, authors
McGraw-Hill Book , 2000
Buku Teks
Borich, Gary D.
Prentice-Hall, [date of publication not identified]
Buku Teks
Snowman, Jack
Wadsworth and Cengage Learning, 2012
Buku Teks
Sullivan, Peter, 1948-
Springer, 2013
Buku Teks SO