Hauptly, Denis J.
American Management Association, 2008
eBooks
Sewell, David F.
Harvester Wheatsheaf, 1990
Buku Teks
Himmelfarb, Gertrude
Weidenfeld and Nicolson,, 1968
Buku Teks
Albrecht, Karl, 1941-
American Management Association, 2003
Buku Teks
Gardner, Howard
Harvard Business School Press, 2006
Buku Teks