Zikmund, W. G., & D'Amico, M. (1998). Student learning guide [for] Effective marketing: Creating and keeping customers (2nd ed.). Cincinnati, OH: South-Western College.
استشهاد بنمط شيكاغوZikmund, William G., و Michael D'Amico. Student Learning Guide [for] Effective Marketing: Creating and Keeping Customers. 2nd ed. Cincinnati, OH: South-Western College, 1998.
MLA استشهادZikmund, William G., و Michael D'Amico. Student Learning Guide [for] Effective Marketing: Creating and Keeping Customers. 2nd ed. Cincinnati, OH: South-Western College, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.