APA (7th ed.) Citation

Baker, O. E., Borsodi, R., Wilson, M. L., & Brownell, B. (1939). Agriculture in modern life. Harper & Bros..

Chicago Style (17th ed.) Citation

Baker, O. E., Ralph Borsodi, M. L. Wilson, and Baker Brownell. Agriculture in Modern Life. New York, London: Harper & Bros., 1939.

MLA (9th ed.) Citation

Baker, O. E., et al. Agriculture in Modern Life. Harper & Bros., 1939.