Inderbitzin, Michelle Lee
SAGE, 2015
Buku Teks
Schwartz, Edward E.
National Association of Social Workers , 1966
Buku Teks
edited by D.R. Rutter, and Lyn Quine
Avebury, 1994
Buku Teks
edited by David Crowther, Linne Marie Lauesen
Emerald, 2016
eBooks
James P Sterba
Routledge, 2001
Buku Teks