APA (7th ed.) Zitazioa
Thomson, K. S. (2009). The young Charles Darwin. Yale University Press.
Chicago Style (17th ed.) Zitazioa
Thomson, Keith Stewart. The Young Charles Darwin. New Haven: Yale University Press, 2009.
MLA (9th ed.) Zitazioa
Thomson, Keith Stewart. The Young Charles Darwin. Yale University Press, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.