International encyclopedia of marketing; Vol. 3
edited by A.S. Bhamhra, A.K. Chaudhary
Anmol Publications PVT, 1998
 Buku Referensi
International encyclopedia of islamic dynasties : (a continuing series) V ol. 8 Bangladesh
editor in chief, Nagendra Kr Singh
New Delhi : Anmol, 2000,
 Buku Referensi
The Columbia encyclopedia; Volume V
editor, William Bridgwater dan Seymour Kurtz
Columbia University Press, 1963
 Buku Referensi
Cateora, Philip R.
International marketing
McGraw-Hill, 2008
 Buku Teks
Cateora, Philip R.
International marketing
McGraw-Hill Irwin, 2009
 Buku Teks