Dyfyniad APA

Armstrong, G., & Philip, K. (2005). Marketing: An introduction (6th ed.). Pearson.

Dyfyniad Arddull Chicago

Armstrong, Gary, and Kotler Philip. Marketing: An Introduction. 6th ed. Delhi: Pearson, 2005.

Dyfyniad MLA

Armstrong, Gary, and Kotler Philip. Marketing: An Introduction. 6th ed. Pearson, 2005.

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