APA (7th ed.) Citation

Otto, J. H., & Towle, A. (1969). Modern biology. Holt Rinehart Winston.

Chicago Style (17th ed.) Citation

Otto, James Howard, and Albert Towle. Modern Biology. New York: Holt Rinehart Winston, 1969.

MLA (9th ed.) Citation

Otto, James Howard, and Albert Towle. Modern Biology. Holt Rinehart Winston, 1969.

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