APA
Howard J. A., . (1965). Marketing theory. Boston: Allyn and Bacon.
Chicago
Howard John A, . 1965. Marketing theory. Boston: Allyn and Bacon.
Harvard
Howard J. A., . (1965). Marketing theory. Boston: Allyn and Bacon.
MLA
Howard John A, . Marketing theory. Boston: Allyn and Bacon. 1965.