Dyfyniad APA

Proctor, T. (2005). Essentials of marketing research (4th ed.). Financial Times/Prentice Hall.

Dyfyniad Arddull Chicago

Proctor, Tony. Essentials of Marketing Research. 4th ed. Harlow, England ; New York: Financial Times/Prentice Hall, 2005.

Dyfyniad MLA

Proctor, Tony. Essentials of Marketing Research. 4th ed. Financial Times/Prentice Hall, 2005.

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