Publishing Science Group, Inc., 1973
Buku Teks
Muchdis
Balai Pustaka, 1950
Buku Teks
Kurian, George Thomas, author
Amacom, 2013
Buku Referensi
Tobin, Daniel R., 1946-
American Management Association, 2008
eBooks
Dilenschneider, Robert L., author
American Management Association, 2010
eBooks