APA (7th ed.) Zitazioa
Harcourt, A. H. (2012). Human biogeography. University of California Press.
Chicago Style (17th ed.) Zitazioa
Harcourt, A. H. Human Biogeography. Berkeley: University of California Press, 2012.
MLA (9th ed.) Zitazioa
Harcourt, A. H. Human Biogeography. University of California Press, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.