Gaya APA

Kerin, A, R., Peterson, R, A. (1993). Strategic Marketing Problems Cases and Comments (6th. Ed). United States of America: Allyn and Bacon.

Gaya MLA

Kerin, A., Roger., Peterson, Robert, A.. "Strategic Marketing Problems Cases and Comments". 6th. Ed United States of America: Allyn and Bacon, 1993. Text.