Gaya APA
Kotler, Philip, Armstrong, Gary. (2001).
Principles of marketing, 9th ed. (9th ed.).
New Jersey:
Prentice Hall.
Gaya Chicago
Kotler, Philip, Armstrong, Gary.
Principles of marketing, 9th ed..
9th ed.
New Jersey:
Prentice Hall,
2001.
Text.
Gaya MLA
Kotler, Philip, Armstrong, Gary.
Principles of marketing, 9th ed..
9th ed.
New Jersey:
Prentice Hall,
2001.
Text.
Gaya Turabian
Kotler, Philip, Armstrong, Gary.
Principles of marketing, 9th ed..
9th ed.
New Jersey:
Prentice Hall,
2001.
Print.