Corey, Gerald, author
Brooks/Cole , 2001
Buku Teks
Strong, Stanley R., author
John Wiley & Sons, 1982
Buku Teks
Brammer, Lawrence M., author
Prentice-Hall, 1982
Buku Teks
Neukrug, Edward S., author
Brooks/Cole Cengage Learning, 2012
Buku Teks
edited by Freddy A. Paniagua, Ann-Marie Yamada
Academic Press, 2013
eBooks