Ivey, Allen E.
Allyn and Bacon, 1996
Buku Teks
editors, Joseph G. Ponterotto, J. Mannuel Casas, Lisa A. Suzuki, Charlene M. Alexander
Sage Publications, 2001
Buku Referensi
Pedersen, Paul
American Association for Counseling and Development, 1988
Buku Teks
Edited by Michele A. Paludi
Prentice-Hall, 2002
Buku Teks
edited by Snehendu B. Kar, Rina Alcalay
Sage, 2000
Buku Teks