Dyfyniad APA

Armstrong, G., & Kotler, P. (2011). Marketing: An introduction (10th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Armstrong, Gary, and Philip Kotler. Marketing: An Introduction. 10th ed. Boston, Mass: Prentice Hall, 2011.

Dyfyniad MLA

Armstrong, Gary, and Philip Kotler. Marketing: An Introduction. 10th ed. Prentice Hall, 2011.

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