Schoell, W. F., & Guiltinan, J. P. (1982). Marketing: Contemporary concepts and practices (2nd ed.). Allyn and Bacon.
Παραπομπή Chicago StyleSchoell, William F., και Joseph P. Guiltinan. Marketing: Contemporary Concepts and Practices. 2nd ed. New York: Allyn and Bacon, 1982.
Παραπομπή MLASchoell, William F., και Joseph P. Guiltinan. Marketing: Contemporary Concepts and Practices. 2nd ed. Allyn and Bacon, 1982.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.