APA (7th ed.) Citation

Smith, R. L. (1980). Ecology and field biology (3. ed.). Harper & Row.

Chicago Style (17th ed.) Citation

Smith, Robert L. Ecology and Field Biology. 3. ed. New York (u.a.): Harper & Row, 1980.

MLA (9th ed.) Citation

Smith, Robert L. Ecology and Field Biology. 3. ed. Harper & Row, 1980.