Dyfyniad APA

Armstrong,Gary, & Kotler,Philip. (2005). Marketing: An introduction/7th ed. Pearson Education.

Dyfyniad Arddull Chicago

Armstrong,Gary, and Kotler,Philip. Marketing: An Introduction/7th Ed. New Delhi: Pearson Education, 2005.

Dyfyniad MLA

Armstrong,Gary, and Kotler,Philip. Marketing: An Introduction/7th Ed. Pearson Education, 2005.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.