Cutnell, John D.
John Wiley & Sons, 2001
Buku Teks SO
Chang, Raymond
McGraw-Hill, 2002
Buku Teks SO
Anton, Howard
John Wiley & Sons, 1984
Buku Teks SO
National Association of Social of social Workers, 1980
Buku Teks
National Association of Social of social Workers, 1980
Buku Teks