Dyfyniad APA

Cooper, D. Business Research Methods. Tata Mc-Graw Hill.

Dyfyniad Arddull Chicago

Cooper, Donald. Business Research Methods. New Delhi: Tata Mc-Graw Hill.

Dyfyniad MLA

Cooper, Donald. Business Research Methods. Tata Mc-Graw Hill.

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