Dyfyniad APA

Armstrong, G., & Kotler, P. (2003). Marketing: An introduction (6th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Armstrong, Gary, and Philip Kotler. Marketing: An Introduction. 6th ed. Upper Saddle River, NJ: Prentice Hall, 2003.

Dyfyniad MLA

Armstrong, Gary, and Philip Kotler. Marketing: An Introduction. 6th ed. Prentice Hall, 2003.

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