Dyfyniad APA

Stanton, W. J., & Etzel, M. J. W. (1991). Fundamentals of marketing (9th ed.). McGraw Hill.

Dyfyniad Arddull Chicago

Stanton, William J., and Michael J. Walker Etzel. Fundamentals of Marketing. 9th ed. New York: McGraw Hill, 1991.

Dyfyniad MLA

Stanton, William J., and Michael J. Walker Etzel. Fundamentals of Marketing. 9th ed. McGraw Hill, 1991.

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