APA Citation

Petrides, G. A., & Peterson, R. T. (1986). A field guide to trees and shrubs: Northeastern and north-central United States and southeastern and south-central Canada (2nd ed.). Boston, MA: Houghton Mifflin.

Chicago Style Citation

Petrides, George A., and Roger Tory Peterson. A Field Guide to Trees and Shrubs: Northeastern and North-central United States and Southeastern and South-central Canada. 2nd ed. Boston, MA: Houghton Mifflin, 1986.

MLA Citation

Petrides, George A., and Roger Tory Peterson. A Field Guide to Trees and Shrubs: Northeastern and North-central United States and Southeastern and South-central Canada. 2nd ed. Boston, MA: Houghton Mifflin, 1986.

Warning: These citations may not always be 100% accurate.