Dyfyniad APA

Boyd, W. C., & Asimov, I. (1955). Races and People. New York: Abelard-Schuman.

Dyfyniad Arddull Chicago

Boyd, William C., và Isaac Asimov. Races and People. New York: Abelard-Schuman, 1955.

Dyfyniad MLA

Boyd, William C., và Isaac Asimov. Races and People. New York: Abelard-Schuman, 1955.

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