Dyfyniad APA

Russell, B. (2007). The problems of philosophy. New York: Cosimo Classics.

Dyfyniad Arddull Chicago

Russell, Bertrand. The Problems of Philosophy. New York: Cosimo Classics, 2007.

Dyfyniad MLA

Russell, Bertrand. The Problems of Philosophy. New York: Cosimo Classics, 2007.

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