Allyn and Bacon, 1980
Buku Teks
edited by Barbara P. Uzzell, Marcel O. Ponton, Alfredo Ardila
Lawrence Erlbaum Associates, 2007
Buku Teks
Moghaddam, Fathali M., author
W.H. Freeman, 1993
Buku Teks
Holden, Nigel J., author
Prentice-Hall, 2002
Buku Teks
Tan, Joo Seng, author
McGrawHill, 2004
Buku Teks