Dyfyniad APA

May, T. (2011). Social research: Issues, methods and process (4th ed.). McGraw Hill.

Dyfyniad Arddull Chicago

May, Tim. Social Research: Issues, Methods and Process. 4th ed. Maidenhead, England: McGraw Hill, 2011.

Dyfyniad MLA

May, Tim. Social Research: Issues, Methods and Process. 4th ed. McGraw Hill, 2011.

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