APA (7th ed.) Citation

Knight, C. R. (1946). Life through the ages. A. A. Knopf.

Chicago Style (17th ed.) Citation

Knight, Charles Robert. Life Through the Ages. New York: A. A. Knopf, 1946.

MLA (9th ed.) Citation

Knight, Charles Robert. Life Through the Ages. A. A. Knopf, 1946.