R.M. Moerdowo, author
Balai Pustaka, 1983
Buku Teks
Gulaid, Mahamoud Awaleh
Islamic Research and Training Institute, Islamic Development Bank , 1990
Buku Teks
Ball, Alan R., author
Macmillan, 1974
Buku Teks
Gallagher, Michael, author
McGraw-Hill, 2011
Buku Teks
edited by Margo Todd
Routledge, 1995
Buku Teks