Kerin, R. (1987). Strategic marketing problems: Cases and comments (4ª ed.). Allyn and Bacon.
Cita Chicago (17th ed.)Kerin, Roger. Strategic Marketing Problems: Cases and Comments. 4ª ed. Allyn and Bacon, 1987.
Cita MLA (9th ed.)Kerin, Roger. Strategic Marketing Problems: Cases and Comments. 4ª ed. Allyn and Bacon, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.