Bateman, Thomas S., author
McGraw-Hill, 1999
Buku Teks
Chase, Richard B., author
McGraw-Hill, 2001
Buku Teks
Porter, Michael E., author
The Free Press, 1985
Buku Teks
Narayanan, V. K., author
Prentice Hall 2001, 2001
Buku Teks
ed. by Nick Boulter, Murray Dalziel and Jackie Hill ; foreword by David McClelland
Crest Publishing House, 1999
Buku Referensi