Isaac, Stephen, author
University Associates, 1981
Buku Teks
Patton, Michael Quinn, author
SAGE, 2015
Buku Teks
edited by James A. Ciarlo
Sage, 1981
Buku Teks
edited by William C. Sze and June G. Hopps
Schenkman, 1978
Buku Teks
edited by Herbert C. Schulberg
Human Science Press, 1979
Buku Teks