Gaya APA
COREY, E, ., R.
(1991).
INDUSTRIAL MARKETING : CASES AND CONCEPTS
(
Ed.4)
.
America:
GRAMEDIA.
Gaya MLA
COREY, E, ., RAYMOND.
"INDUSTRIAL MARKETING : CASES AND CONCEPTS".
Ed.4
America:
GRAMEDIA,
1991.
Text.