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
Mager, Robert F., author
Fearon, 1968
Buku Teks
Lefrancois, Guy R., author
Wodsworth publications , 1985
Buku Teks
Ormrod, Jeanne Ellis, author
Prentice-Hall, 2003
Buku Teks