Tohutoro APA (7th ed.)

Harlow, W. M. (1957). Trees of the eastern and central United States and Canada. Dover.

Tohutoru Kātū Chicago (17th ed.)

Harlow, William M. Trees of the Eastern and Central United States and Canada. Nueva York: Dover, 1957.

Tohutoro MLA (9th ed.)

Harlow, William M. Trees of the Eastern and Central United States and Canada. Dover, 1957.