edited by Robert H. Beck
National Association of Social Workers, 1965
Buku Teks
Richard Arum, Irenee R. Beattie, Merced, Karly Ford, editors
SAGE Publications, 2015
Buku Teks
Heraud, Brian J., author
Routledge & Kegan Paul , 1981
Buku Teks
Gore, M.S., author
Asia Publishing House, 1965
Buku Teks
Brembeck, Cole S.
John Wiley & Sons, 1967
Buku Teks