Feld, Lars P., author
[Springer-Verlag, ], 2012
eBooks
Dubois, Brenda, 1949-, author
Allyn and Boston, 1992
Buku Teks
Gore, M.S., author
Asia Publishing House, 1965
Buku Teks
edited by Florence Haselkorn
Council on Social Work Education, 1971
Buku Teks
Langer, William L., author
P. Smith, 1968
Buku Teks