Dyfyniad APA

Zikmund William. (2003). Business research methods/7e (7th ed.). Thomson.

Dyfyniad Arddull Chicago

Zikmund William. Business Research Methods/7e. 7th ed. South-Western: Thomson, 2003.

Dyfyniad MLA

Zikmund William. Business Research Methods/7e. 7th ed. Thomson, 2003.

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