Kotler, Philip, author
Prentice-Hall, 2003
Buku Teks
Kotler, Philip, author
Prentice-Hall, 1989
Buku Teks
Kotler, Philip, author
Pearson Education, 2006
Buku Teks
Boyd, Harper W., Jr., author
Harcourt Brace Jovanovich , 1972
Buku Teks
edited by Mary Feeney
Taylor Graham, 1986
Buku Referensi