Citazione APA

Kotler, P., & Gray Armstrong. (1992). Principles of marketing (5th ed.). Prentice-Hall.

Stile di citazione Chicago

Kotler, Philip, e Gray Armstrong. Principles of Marketing. 5th ed. New Delhi: Prentice-Hall, 1992.

Citazione MLA

Kotler, Philip, e Gray Armstrong. Principles of Marketing. 5th ed. Prentice-Hall, 1992.