edited by Linda M. Whiteford and Marilyn L. Poland
Westview Press, 1989
Buku Teks
edited by W. Steve Albrecht
South-Western Publishing, 1992
Buku Teks
Gordon, A. David
Longman, 1996
Buku Teks
Kimmel, Allan J.
Blackwell, 2007
Buku Teks
edited by Richard Hugman, David Smith
Routledge, 1996
Buku Teks