Gaya APA
Engel, James F.. (1968).
Consumer behavior 8th ed. (8 Edition).
America:
Dryden.
Gaya Chicago
Engel, James F..
Consumer behavior 8th ed..
8 Edition
America:
Dryden,
1968.
Text.
Gaya MLA
Engel, James F..
Consumer behavior 8th ed..
8 Edition
America:
Dryden,
1968.
Text.
Gaya Turabian
Engel, James F..
Consumer behavior 8th ed..
8 Edition
America:
Dryden,
1968.
Print.