Dyfyniad APA

Evans Joel R. & Berman, B. (1997). Marketing (7th ed.). Prentice Hall International.

Dyfyniad Arddull Chicago

Evans Joel R. and Barry Berman. Marketing. 7th ed. New Jersey: Prentice Hall International, 1997.

Dyfyniad MLA

Evans Joel R. and Barry Berman. Marketing. 7th ed. Prentice Hall International, 1997.

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