Volpe, E. P. (1996). Understanding evolution (5th ed.). Universal Book Stall.
Chicago Edition CitationVolpe, E Peter. Understanding Evolution. 5th ed. New Delhi: Universal Book Stall, 1996.
Cita MLAVolpe, E Peter. Understanding Evolution. 5th ed. Universal Book Stall, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.