editors, Allen E. Bergin, Sol L. Garfield
John Wiley & Sons, 1994
Buku Referensi
edited by Allen E. Bergin, Sol L. Garfield
John Wiley & Sons, 1994
Buku Referensi
Welfel, Elizabeth Reynolds, author
Brooks/Cole Cengage Learning, 2013
Buku Teks
Glicken, Morley D., author
Elsevier , 2009
Buku Teks
Bednar, Richard L.
Brooks/Cole Pub., 1991
Buku Teks