Carlton, Katherine Tasheff
Gloucester, Ma Rockport Publisher 2001,
Buku Referensi
Varey, Richard J., author
John Wiley & Sons, 2002
Buku Teks
Tabrez Ahmad, author
A.P.H. Pub., 2003
Buku Teks
M. Arsyad Sanusi, author
Dian Ariesta, 2004
Buku Teks
Muhammad Arifin, author
2007
UI - Tesis (Membership)