Kliem, Ralp L., author
CRC Press, Taylor & Francis Group, 2011
Buku Teks
Dobson, Michael S., author
American Management Association, 2011
eBooks
Boddy, David, author
Prentice-Hall, 2002
Buku Teks
Archibald, Russell D., author
John Wiley & Sons, 1976
Buku Teks
Harvard Business School Press, 2004
Buku Teks