Dyfyniad APA

West, W. M., & West, R. (1934). The story of man's early progress (New ed.). Allyn and Bacon.

Dyfyniad Arddull Chicago

West, Willis Mason, and Ruth West. The Story of Man's Early Progress. New ed. Boston: Allyn and Bacon, 1934.

Dyfyniad MLA

West, Willis Mason, and Ruth West. The Story of Man's Early Progress. New ed. Allyn and Bacon, 1934.

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