Dyfyniad APA

Zikmund, W. G. (2003). Business research methods (7th ed.). Thomson Asia pvt ltd.

Dyfyniad Arddull Chicago

Zikmund, William G. Business Research Methods. 7th ed. Singapore: Thomson Asia pvt ltd, 2003.

Dyfyniad MLA

Zikmund, William G. Business Research Methods. 7th ed. Thomson Asia pvt ltd, 2003.

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