Gaya APA
Principles of Marketing. (1999).
Amerika:
Prentice-Hall.
Gaya Chicago
Principles of Marketing.
Ed. 8.
Amerika:
Prentice-Hall,
1999.
.
Gaya MLA
Principles of Marketing.
Ed. 8.
Amerika:
Prentice-Hall,
1999.
.
Gaya Turabian
Principles of Marketing.
Amerika:
Prentice-Hall,
1999.
.