Dyfyniad APA

Christensen, L. B. (2001). Experimental methodology (8th ed.). Allyn & Bacon.

Dyfyniad Arddull Chicago

Christensen, Larry B. Experimental Methodology. 8th ed. Boston: Allyn & Bacon, 2001.

Dyfyniad MLA

Christensen, Larry B. Experimental Methodology. 8th ed. Allyn & Bacon, 2001.

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