APA (7th ed.) Citation

Zim, H. S. (1956). Trees: A guide to familiar American trees. Golden Press.

Chicago Style (17th ed.) Citation

Zim, Herber Spencer. Trees: A Guide to Familiar American Trees. New York: Golden Press, 1956.

MLA (9th ed.) Citation

Zim, Herber Spencer. Trees: A Guide to Familiar American Trees. Golden Press, 1956.