Gaya APA
Kotler, P. (1988).
Marketing management : analysis, planning, implementation, and control (6th ed.).
New Jersey:
Prentice-Hall Internationl, Inc..
Gaya MLA
Kotler, Philip.
"Marketing management : analysis, planning, implementation, and control".
6th ed.
New Jersey:
Prentice-Hall Internationl, Inc.,
1988.
BUKU.