APA (7th ed.) Zitazioa

Little, E. L. (1979). Forest trees of the United States and Canada: And how to identify them. Dover.

Chicago Style (17th ed.) Zitazioa

Little, Elbert Luther. Forest Trees of the United States and Canada: And How to Identify Them. Nueva York: Dover, 1979.

MLA (9th ed.) Zitazioa

Little, Elbert Luther. Forest Trees of the United States and Canada: And How to Identify Them. Dover, 1979.