Howard, John A., author
Richard D. Irwin, 1973
Buku Teks
Williams, L.A. (Leonard Aimslie), 1909-
American Elsevier Publishing Company, INC, 1968
Buku Teks
Kotler, Philip, author
Erlangga, 2009
Buku Teks
Komaruddin Sastradipoera, author
Kappa-Sigma, 2003
Buku Teks
Harper & Row, 1974
Buku Teks