APA (7th ed.) Citation

Barnard, E. S. (2002). New York City trees: A field guide for the metropolitan area. Columbia University Press.

Chicago Style (17th ed.) Citation

Barnard, Edward Sibley. New York City Trees: A Field Guide for the Metropolitan Area. New York: Columbia University Press, 2002.

MLA (9th ed.) Citation

Barnard, Edward Sibley. New York City Trees: A Field Guide for the Metropolitan Area. Columbia University Press, 2002.