Kimmel, Allan J., author
Blackwell Publishing, 2007
Buku Teks
edited by Richard Hugman, David Smith
Routledge, 1996
Buku Teks
Moffic, H. Steven, author
Jossey-Bass, 1997
Buku Teks
edited by Andrew Belsey and Ruth Chadwick
Routledge, 1995
Buku Teks
Tavani, Herman T.
Wiley, 2004
Buku Teks