The Encyclopedia Americana : the international reference work, volume 13
Americana Corporation, 1960
 Buku Referensi
The Encyclopedia Americana : the international reference work, volume 14
Americana Corporation, 1960
 Buku Referensi
International encyclopedia of islamic dynasties : (a continuing series); Vol. 13 : Egypt
editor-in-chief Nagendra Kumar Singh
Anmol, 2000
 Buku Referensi
International encyclopedia of islamic dynasties : (a continuing series); Vol. 14 : Egypt
editor-in-chief Nagendra Kumar Singh
Anmol, 2000
 Buku Referensi
International encyclopedia of the social sciences : volume 11 & 12
edited by David L. Sills
Macmillan and The Free Press, 1968
 Buku Referensi