Klenk, Robert W.
Wadsworth, 1974
Buku Teks
Klenk, Robert W
Wadsworth, 1970
Buku Teks
Busch-Armendariz, Noel Bridge
Sage, 2017
Buku Teks
Aditya Adji Wibowo
Fakultas Teknik Universitas Indonesia, 2012
UI - Tesis (Open)
National Association of Social of social Workers, 1980
Buku Teks