Zikmund, W. G., & D'Amico, M. (1998). Effective marketing: Creating and keeping customers (2nd ed.). Cincinnati, OH: South-Western College.
Chicago-стиль цитированияZikmund, William G., và Michael D'Amico. Effective Marketing: Creating and Keeping Customers. 2nd ed. Cincinnati, OH: South-Western College, 1998.
MLA-цитированиеZikmund, William G., và Michael D'Amico. Effective Marketing: Creating and Keeping Customers. 2nd ed. Cincinnati, OH: South-Western College, 1998.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.