APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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