Kotler, P. (2003). Marketing insights from A to Z: 80 concepts every mnager needs to know. John Wiley.

Kotler, Philip. Marketing Insights from A to Z: 80 Concepts Every Mnager Needs to Know. New Jersey: John Wiley, 2003.

Kotler, Philip. Marketing Insights from A to Z: 80 Concepts Every Mnager Needs to Know. John Wiley, 2003.