Dyfyniad APA

Russell, B. (1956). An essay on the foundations of geometry. Dover.

Dyfyniad Arddull Chicago

Russell, Bertrand. An Essay on the Foundations of Geometry. New York: Dover, 1956.

Dyfyniad MLA

Russell, Bertrand. An Essay on the Foundations of Geometry. Dover, 1956.

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