Kerin, R. A., & Peterson, R. A. (1987). Strategic marketing problems: Cases and comments (4th ed.). Allyn and Bacon.
Chicago-referens (17:e uppl.)Kerin, Roger A., och Robert A. Peterson. Strategic Marketing Problems: Cases and Comments. 4th ed. Boston: Allyn and Bacon, 1987.
MLA-referens (9:e uppl.)Kerin, Roger A., och Robert A. Peterson. Strategic Marketing Problems: Cases and Comments. 4th ed. Allyn and Bacon, 1987.