APA (7th ed.) Citation

Smith, R. L. (1995). Ecology and field biology (5th ed.). Harper Collins.

Chicago Style (17th ed.) Citation

Smith, Robert Leo. Ecology and Field Biology. 5th ed. New York: Harper Collins, 1995.

MLA (9th ed.) Citation

Smith, Robert Leo. Ecology and Field Biology. 5th ed. Harper Collins, 1995.