Bethencourt, Francisco
Temas E. Debates, 1998
Buku Referensi
Hale, John R.
Time-Life Books, 1974
Buku Teks
Arnold, David
Routledge, 1994
Buku Teks
Yakub, Abdillah Abi Abdillah bin
Commission bei F. A. Brockhaus, 1866
Buku Teks
Sircar, D.C.
Motilal Banarsidass, 1960
Buku Teks