Gaya APA
Kotler, Philip, Armstrong, Gary. (1991).
Principles of marketing, 5th ed. (5th ed.).
New Jersey:
Prentice Hall.
Gaya Chicago
Kotler, Philip, Armstrong, Gary.
Principles of marketing, 5th ed..
5th ed.
New Jersey:
Prentice Hall,
1991.
Text.
Gaya MLA
Kotler, Philip, Armstrong, Gary.
Principles of marketing, 5th ed..
5th ed.
New Jersey:
Prentice Hall,
1991.
Text.
Gaya Turabian
Kotler, Philip, Armstrong, Gary.
Principles of marketing, 5th ed..
5th ed.
New Jersey:
Prentice Hall,
1991.
Print.