APA Citation

Smith, R. L. (1972). The ecology of man: An ecosystem approach. New York: Harper.

Chicago Style Citation

Smith, Robert Leo. The Ecology of Man: An Ecosystem Approach. New York: Harper, 1972.

MLA Citation

Smith, Robert Leo. The Ecology of Man: An Ecosystem Approach. New York: Harper, 1972.

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