edited by A.S. Bhamhra, A.K. Chaudhary
Anmol Publications PVT, 1998
Buku Referensi
editor in chief, Nagendra Kr Singh
New Delhi : Anmol, 2000,
Buku Referensi
editor, William Bridgwater dan Seymour Kurtz
Columbia University Press, 1963
Buku Referensi
Cateora, Philip R.
McGraw-Hill, 2008
Buku Teks
Cateora, Philip R.
McGraw-Hill Irwin, 2009
Buku Teks