Tohutoro APA (7th ed.)

Kotler, P., & Armstrong, G. (1999). Principles of marketing (9 ed.). Prentice Hall.

Tohutoru Kātū Chicago (17th ed.)

Kotler, Philip, me Gray Armstrong. Principles of Marketing. 9 ed. London ; New York: Prentice Hall, 1999.

Tohutoro MLA (9th ed.)

Kotler, Philip, me Gray Armstrong. Principles of Marketing. 9 ed. Prentice Hall, 1999.