Abbott, Andrew, author
The University of Chicago Press, 2001
Buku Teks
Adams, Katherine H., author
Mayfield Publishing Company, 2000
Buku Teks
Lewis, Jenny M., author
Routledge, 2013
eBooks
Sardar, Ziauddin, author
Icon Books, 2000
Buku Teks
Sardar, Ziauddin, author
Mizan, 2001
Buku Teks