Janine M. Ubink, editor
Leiden University Press, 2009
Buku Teks
Gulaid, Mahamoud Awaleh
Islamic Research and Training Institute, Islamic Development Bank , 1990
Buku Teks
Daly, John L., 1952-, author
M.E. Sharpe, 2012
Buku Teks
Roller, Edeltraud, author
Oxford University Press, 2008
Buku Teks
edited by Michael H. Merson, Robert E. Black and Anne J. Mills
Aspen Publication, 2001
Buku Teks