Davis, Martyn P.
Business Books, 1985
Buku Teks
Davis, Martyn P.
Business Publications Limited, 1967
Buku Teks
Surmanek, Jim, author
NTC Business Books, 1989
Buku Teks
Barban, Arnold N.
NTC Business Books, 1993
Buku Teks
Ida Ayu Krisdina M, author
1998
UI - Tesis (Membership)