Appleman, P. (1979). Darwin. New York: W. W. Norton and Company.
Chicago Style aipamenaAppleman, Phillip. Darwin. New York: W. W. Norton and Company, 1979.
MLA aipamenaAppleman, Phillip. Darwin. New York: W. W. Norton and Company, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.