Dyfyniad APA
Luck, D. J., Taylor, D. A., & Wales, H. G. (1974). Marketing research (4th ed.). Prentice-Hall.
Dyfyniad Arddull Chicago
Luck, David Johnston, Donald Arthur Taylor, and Hugh G. Wales. Marketing Research. 4th ed. Englewood Cliffs, N.J.: Prentice-Hall, 1974.
Dyfyniad MLA
Luck, David Johnston, et al. Marketing Research. 4th ed. Prentice-Hall, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.