Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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