Gaya APA

A., K, R., A, P, R. (1990). Strategic Marketing Problems : Cases and Comments (Edisi Lima). Gould Street: Allyn and Bacon.

Gaya MLA

A., Kerin, Roger., A, Peterson, Robert. "Strategic Marketing Problems : Cases and Comments". Edisi Lima Gould Street: Allyn and Bacon, 1990. Text.