Augustin, Sally
John & Sons, Inc, 2009
Buku Teks SO
by Jeffrey Harrison, Robert E. Hoskisson, R. Duane Ireland, Michael A. Hitt
South Western Cengage Learning, 2013
Buku Teks
Porter, Michael E.
Free Press, 1985
Buku Teks SO
Bateman, Thomas S.
McGraw-Hill, 1999
Buku Teks
DK Multimedia, 1999
Multimedia