Gaya APA
Kotler, P. (1998).
Dasar-dasar pemasaran principles of marketing 7e. Jilid 2 (1998).
Englewood Cliifs:
Prentce Hall.
Gaya MLA
Kotler, Philip.
"Dasar-dasar pemasaran principles of marketing 7e. Jilid 2".
1998
Englewood Cliifs:
Prentce Hall,
1998.
Text.