edited by Ian S. Markham, Tinu Ruparell
Blackwell, 2001
Buku Teks
Saint-Laurent, George E., author
Mayfield, 2000
Buku Teks
edited by Stewart Sutherland, Leslie Houlden, Peter Clarke, Friedhelm Hardy
Routledge, 1988
Buku Referensi
Bettany, G.T., author
Bracken Books, [date of publication not identified]
Buku Referensi
consulting editor, Wendy Doniger
Encyclopaedia Britannica, Inc., 2006
Buku Referensi