Kotler, P., & Armstrong, G. (1999). Principles of marketing (9 ed.). Prentice Hall.
芝加哥风格引文Kotler, Philip, 与 Gray Armstrong. Principles of Marketing. 9 ed. London ; New York: Prentice Hall, 1999.
MLA引文Kotler, Philip, 与 Gray Armstrong. Principles of Marketing. 9 ed. Prentice Hall, 1999.