APA (7th ed.) Zitazioa
Pielou, E. C. (2011). The world of northern evergreens (2nd ed.). Comstock Pub. Associates.
Chicago Style (17th ed.) Zitazioa
Pielou, E. C. The World of Northern Evergreens. 2nd ed. Ithaca: Comstock Pub. Associates, 2011.
MLA (9th ed.) Zitazioa
Pielou, E. C. The World of Northern Evergreens. 2nd ed. Comstock Pub. Associates, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.