Kotler, P., & Armstrong, G. (1999). Principles of marketing (9 ed.). Prentice Hall.
Chicago Style (17. basım) AtıfKotler, Philip, ve Gray Armstrong. Principles of Marketing. 9 ed. London ; New York: Prentice Hall, 1999.
MLA (9th ed.) AtıfKotler, Philip, ve Gray Armstrong. Principles of Marketing. 9 ed. Prentice Hall, 1999.