Gaya APA
BELL, M, L.
(1966).
INSTRUCTOR'S MANUAL FOR MARKETING: CONCEPT AND STRATEGY
.
Boston:
HOUGHTON MIFFLIN.
Gaya MLA
BELL, Martin, L..
"INSTRUCTOR'S MANUAL FOR MARKETING: CONCEPT AND STRATEGY".
Boston:
HOUGHTON MIFFLIN,
1966.
Textbook.