Gaya APA

Kerin, R, A., Peterson, R, A. (1987). Strategic marketing problems: cases and comments (4th ed). New York: Allyn and Bacon Inc.

Gaya MLA

Kerin, Roger, A.., Peterson, Robert, A.. "Strategic marketing problems: cases and comments". 4th ed New York: Allyn and Bacon Inc, 1987. Printed Book.