APA (7th ed.) Citation

McHenry, R., & Van Doren, C. (1972). A documentary history of conservation in America. Praeger.

Chicago Style (17th ed.) Citation

McHenry, Robert, and Charles Van Doren. A Documentary History of Conservation in America. New York: Praeger, 1972.

MLA (9th ed.) Citation

McHenry, Robert, and Charles Van Doren. A Documentary History of Conservation in America. Praeger, 1972.