Gaya APA
Kotler, Philip, Armstrong, Gary. (2001).
Principles of marketing (9e).
London:
Prentice Hall.
Gaya Chicago
Kotler, Philip, Armstrong, Gary.
Principles of marketing.
9e
London:
Prentice Hall,
2001.
Buku.
Gaya MLA
Kotler, Philip, Armstrong, Gary.
Principles of marketing.
9e
London:
Prentice Hall,
2001.
Buku.
Gaya Turabian
Kotler, Philip, Armstrong, Gary.
Principles of marketing.
9e
London:
Prentice Hall,
2001.
Buku.