The Encyclopedia Americana : the international reference work, volume 9
Americana Corporation, 1960
 Buku Referensi
The Encyclopedia Americana : the international reference work, volume 10
Americana Corporation, 1960
 Buku Referensi
International encyclopedia of islamic dynasties : (a continuing series); Vol. 9 : Bangladesh
editor-in-chief Nagendra Kr. Singh
Anmol, 2000
 Buku Referensi
International encyclopedia of islamic dynasties : (a continuing series); Vol. 10 : Bangladesh - Bosnia
editor-in-chief Nagendra Kumar Singh
Anmol, 2000
 Buku Referensi
International encyclopedia of the social sciences : volume 13 & 14
edited by David L. Sills
Macmillan and The Free Press, 1968
 Buku Referensi