The World's religions: Islam
edited by Peter Clarke
Routledge, 1988
 Buku Teks
Bettany, G.T.
Encyclopedia of world religions
Bracken Books, [date of publication not identified]
 Buku Referensi
Britannica encyclopedia of world religions
consulting editor, Wendy Doniger
Encyclopaedia Britannica, Inc., 2006
 Buku Referensi
The Oxford encyclopedia of the modern Islamic World Editor in Chief
John L. Esposito, editor in chief
Oxford Oxford University Press 1995
 Buku Referensi
Fudulu,Paul
The economic decoding of religious dogmas: ranking world religions in terms of economic consistency
Emerald, 2017
 eBooks