Rogers, Stephen C.
American Management Association;, 2009
eBooks
Whiteley, Richard
Addison-Wesley Publishing, 1996
Buku Teks
Afuah, Allan
Routledge, 2009
Buku Teks
Gamble, John E.
McGraw-Hill, 2013
Buku Teks
Hamel, Gary
Harvard Business School Press, 1994
Buku Teks