ed. by Michael J. Baker
Routledge, 1995
Buku Referensi
edited by A.S. Bhamhra, A.K. Chaudhary
Anmol Publications PVT, 1998
Buku Referensi
edited by A.S. Bhamhra, A.K. Chaudhary
Anmol Publications PVT, 1998
Buku Referensi
by Roger A. Kerin ... [and others]
McGraw-Hill, 2002
Buku Teks
Etzel, Michael J.
McGraw-Hill, 2004
Buku Teks