Adams, Katherine H.
Mayfield Publishing Company, 2000
Buku Teks
Lewis, Jenny M.
Routledge, 2013
eBooks
Sardar, Ziauddin
Icon Books, 2000
Buku Teks
Sardar, Ziauddin
Mizan, 2001
Buku Teks
edit by Brenda Freshman, Louis Rubino, Yolanda (Linda) Reid Chassiakos
Jones and Bartlett, 2010
Buku Teks