APA (7th ed.) Citation

Simpson, G. G. (1953). Life of the past: An introduction to paleontology. Yale University Press.

Chicago Style (17th ed.) Citation

Simpson, George Gaylord. Life of the Past: An Introduction to Paleontology. New Haven: Yale University Press, 1953.

MLA (9th ed.) Citation

Simpson, George Gaylord. Life of the Past: An Introduction to Paleontology. Yale University Press, 1953.