Kerin, R. A., & Peterson, R. A. (1987). Strategic marketing problems: Cases and comments (4th ed.). Allyn and Bacon.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিKerin, Roger A., এবং Robert A. Peterson. Strategic Marketing Problems: Cases and Comments. 4th ed. Boston: Allyn and Bacon, 1987.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিKerin, Roger A., এবং Robert A. Peterson. Strategic Marketing Problems: Cases and Comments. 4th ed. Allyn and Bacon, 1987.