Birdsall, S. S., & Florin, J. W. (1991). Regional landscapes of the United States and Canada (4. ed.). Wiley.
Chicago Style (17th ed.) CitationBirdsall, Stephen S., and John W. Florin. Regional Landscapes of the United States and Canada. 4. ed. New York, NY [u.a.]: Wiley, 1991.
MLA (9th ed.) CitationBirdsall, Stephen S., and John W. Florin. Regional Landscapes of the United States and Canada. 4. ed. Wiley, 1991.
Warning: These citations may not always be 100% accurate.