Dyfyniad APA

Richard Henry Popkin. (1993). Philosophy made simple. New York: Doubleday.

Dyfyniad Arddull Chicago

Richard Henry Popkin. Philosophy Made Simple. New York: Doubleday, 1993.

Dyfyniad MLA

Richard Henry Popkin. Philosophy Made Simple. New York: Doubleday, 1993.

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