APA (7th ed.) Citation

Petrides, G. A. (1972). A field guide to trees and shrubs: Field marks of all trees, shrubs, and woody vines that grow wild in the northeastern and north-central United States and in southeastern and south-central Canada (2d ed.). Houghton Mifflin.

Chicago Style (17th ed.) Citation

Petrides, George A. A Field Guide to Trees and Shrubs: Field Marks of All Trees, Shrubs, and Woody Vines That Grow Wild in the Northeastern and North-central United States and in Southeastern and South-central Canada. 2d ed. Boston: Houghton Mifflin, 1972.

MLA (9th ed.) Citation

Petrides, George A. A Field Guide to Trees and Shrubs: Field Marks of All Trees, Shrubs, and Woody Vines That Grow Wild in the Northeastern and North-central United States and in Southeastern and South-central Canada. 2d ed. Houghton Mifflin, 1972.