APA (7th ed.) Citation

Smith, R. L., & Smith, N. (1966). Ecology and field biology. Harper & Row.

Chicago Style (17th ed.) Citation

Smith, Robert Leo, and Ned Smith. Ecology and Field Biology. New York: Harper & Row, 1966.

MLA (9th ed.) Citation

Smith, Robert Leo, and Ned Smith. Ecology and Field Biology. Harper & Row, 1966.