Schwartz, Edward E., author
National Association of Social Workers , 1966
Buku Teks
Silvia Fatmah Nurusshobah, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Tesis (Membership)
Roberts, Albert R., editor
Gunung Mulia, 2002
Buku Teks
MnMillen, Wyne
University of Chicago Press , 1951
Buku Teks
Weinberger, Paul E., author
Macmillan, 1969
Buku Teks