Dyfyniad APA
McCarthy, E. J., & Perreault, W. D. (1988). Essentials of marketing (4th ed.). Irwin.
Dyfyniad Arddull Chicago
McCarthy, E. Jerome, and William D. Perreault. Essentials of Marketing. 4th ed. Homewood, Ill.: Irwin, 1988.
Dyfyniad MLA
McCarthy, E. Jerome, and William D. Perreault. Essentials of Marketing. 4th ed. Irwin, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.