Smalley, Ruth Elizabeth
Columbia University Press, 1971
Buku Teks
Cynthia Franklin, Editor in Chief
NASW Press, 2016
Buku Referensi
edited by Jerrold R. Brandell
Free Press, 1997
Buku Teks
Edberg, Mark Cameron, 1955-
Jones & Bartlett Learning, 2015
Buku Teks
Edberg, Mark Cameron, 1955-
Jones and Bartlett, 2007
Buku Teks