Dyfyniad APA

Volpe, E. P. (1996). Understanding evolution (5th ed.). Universal Book Stall.

Dyfyniad Arddull Chicago

Volpe, E Peter. Understanding Evolution. 5th ed. New Delhi: Universal Book Stall, 1996.

Dyfyniad MLA

Volpe, E Peter. Understanding Evolution. 5th ed. Universal Book Stall, 1996.

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