APA (7th ed.) Citation

Smith, R. L. The ecology of man: An ecosystem approach. Harper.

Chicago Style (17th ed.) Citation

Smith, Robert Leo. The Ecology of Man: An Ecosystem Approach. New York: Harper.

MLA (9th ed.) Citation

Smith, Robert Leo. The Ecology of Man: An Ecosystem Approach. Harper.

Warning: These citations may not always be 100% accurate.