APA (7th ed.) Citation

Mathews, F. S. (1960). Field book of American trees and shrubs. Putnam.

Chicago Style (17th ed.) Citation

Mathews, F. Schuyler. Field Book of American Trees and Shrubs. New York: Putnam, 1960.

MLA (9th ed.) Citation

Mathews, F. Schuyler. Field Book of American Trees and Shrubs. Putnam, 1960.