Volpe, E. P. (1996). Understanding evolution (5th ed.). Universal Book Stall.
Chicago Style aipamenaVolpe, E Peter. Understanding Evolution. 5th ed. New Delhi: Universal Book Stall, 1996.
MLA aipamenaVolpe, E Peter. Understanding Evolution. 5th ed. Universal Book Stall, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.