Hammond, Allen L., author
Earthscan Publications, 1998
Buku Teks
Rosensweig, Jeffrey A.
The Free Press , 1998
Buku Teks
McRae, Hamish, author
Harvard Business School Press, 1995
Buku Teks
[publisher not identified], 1978
Buku Teks
Gunung Agung, 1982
Buku Teks