Lua APA (7ú heag.)

Kotler, P. (1989). Principles of marketing (3rd.). Prentice Hall.

Lua i Stíl Chicago (17ú heag.)

Kotler, Philip. Principles of Marketing. 3rd. New Delhi: Prentice Hall, 1989.

Lua MLA (9ú heag.)

Kotler, Philip. Principles of Marketing. 3rd. Prentice Hall, 1989.

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