Gaya APA
Webster,Frederick E. (1991).
Industrial marketing strategy (3).
New York:
Jhon Willey.
Gaya Chicago
Webster,Frederick E.
Industrial marketing strategy.
3
New York:
Jhon Willey,
1991.
Text.
Gaya MLA
Webster,Frederick E.
Industrial marketing strategy.
3
New York:
Jhon Willey,
1991.
Text.
Gaya Turabian
Webster,Frederick E.
Industrial marketing strategy.
3
New York:
Jhon Willey,
1991.
Print.