APA (7th ed.) Citation

Birdsall, S. S., & Florin, J. W. (1991). Regional landscapes of the United States and Canada (4th ed.). Wiley.

Chicago Style (17th ed.) Citation

Birdsall, Stephen S., and John William Florin. Regional Landscapes of the United States and Canada. 4th ed. New York: Wiley, 1991.

MLA (9th ed.) Citation

Birdsall, Stephen S., and John William Florin. Regional Landscapes of the United States and Canada. 4th ed. Wiley, 1991.