APA (7th ed.) Citation
Adams, A. B. (1970). Eleventh hour: A hard look at conservation and the future. Putnam.
Chicago Style (17th ed.) Citation
Adams, Alexander B. Eleventh Hour: A Hard Look at Conservation and the Future. New York: Putnam, 1970.
MLA (9th ed.) Citation
Adams, Alexander B. Eleventh Hour: A Hard Look at Conservation and the Future. Putnam, 1970.
Warning: These citations may not always be 100% accurate.