Hicks, Lawrence E.
Mamerican Management Association , 1972
Buku Teks
Colombo, Ronald J.
Oxford University Press, 2015
Buku Teks
Kurian, George Thomas
Amacom, 2013
Buku Referensi
Tobin, Daniel R., 1946-
American Management Association, 2008
eBooks
edited by Paul C. Dinsmore, Jeannette Cabanis-Brewin
American Management Association, 2006
eBooks