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.