APA (7th ed.) Citation

Thomson, J. A., & Geddes, P. (1931). Life: Outlines of general biology. Harper.

Chicago Style (17th ed.) Citation

Thomson, J. Arthur, and Patrick Geddes. Life: Outlines of General Biology. New York: Harper, 1931.

MLA (9th ed.) Citation

Thomson, J. Arthur, and Patrick Geddes. Life: Outlines of General Biology. Harper, 1931.