Rathus, Spencer A., author
Harcourt Brace College, 1993
Buku Teks
Wortman, Camille B., author
McGraw-Hill, 1999
Buku Teks
edited by Leonard Bickman
Sage, 1982
Buku Teks
edited by Leonard Bickman
Sage, 1983
Buku Teks
Bennett, Paul, author
Open University Press, 2003
Buku Teks