Gaya APA
Kotler, Philip, Amstrong, Gary. (1994).
Principles of marketing (6e).
New Jersey:
Prentice Hall.
Gaya Chicago
Kotler, Philip, Amstrong, Gary.
Principles of marketing.
6e
New Jersey:
Prentice Hall,
1994.
Buku.
Gaya MLA
Kotler, Philip, Amstrong, Gary.
Principles of marketing.
6e
New Jersey:
Prentice Hall,
1994.
Buku.
Gaya Turabian
Kotler, Philip, Amstrong, Gary.
Principles of marketing.
6e
New Jersey:
Prentice Hall,
1994.
Buku.