Rossiter, John R., author
Irwin/McGraw-Hiil, 1996
Buku Teks
Shimp, Terence A., author
Thomson, 2002
Buku Teks
Richard J. Semenik, Thomas C. O'Guinn, Chris Allen, Hans Kaufmann
Wadsworth and Cengage Learning, 2012
Buku Teks
Ahuja, B. N., author
Surjeet Publications, 1990
Buku Teks
Spitzer, Harry, author
Harper & Row, 1982
Buku Teks