Cateora, Philip R., author
McGraw-Hill, 2008
Buku Teks
Thorelli, H.B., author
Penguin Books, 1973
Buku Teks
Cateora, Philip R.
McGraw-Hill, 2005
Multimedia
Czinkota, Michael R., author
South Western Cengage Learning, 2013
Buku Teks
Carson, David, author
New York, John Wiley & Sons
Buku Teks