APA (7th ed.) Citation

Farrar, J. L. (1995). Trees of the northern United States and Canada. Iowa State University Press.

Chicago Style (17th ed.) Citation

Farrar, John Laird. Trees of the Northern United States and Canada. Ames: Iowa State University Press, 1995.

MLA (9th ed.) Citation

Farrar, John Laird. Trees of the Northern United States and Canada. Iowa State University Press, 1995.