by Gerald Smale [and others]
National Institute for Social Work, 1993
Buku Teks
Roethlisberger, FJ
HArvard Univ.Press, 1970
Buku Teks
Egan, Gerard, author
Brooks, 2014
Buku Teks
edited by Carmen Germaine Warner
Mosby, 1983
Buku Teks
by Patti J. Thureen [and others]
Elsevier, 2005
Buku Teks