Warde, Ibrahim, author
Edinburgh University Press, 2000
Buku Teks
Khan, Muhammad Akram, author
Routledge, 2003
Buku Referensi
Visser, Hans G., author
Edward Elgar, 2009
Buku Teks
Artikel Jurnal
Chapra, M. Umer (Muhammad Umer), 1933-, author
Islamic Foundation, 2000
Buku Teks