Nakhle, Carole, author
Routledge, 2008
Buku Teks
Ahuja, B. N., author
Surjeet Publications, 1989
Buku Teks
Henderson, David, author
New Zealand Business Roundtable , 1998
Buku Teks
Thor Beng Chong, 1969
Buku Teks
The Japan Association of Private Colleges and Universities , 1987
Buku Teks