APA (7th ed.) Citation

Lewis, R. (2018). Finding purpose in a godless world: Why we care even if the universe doesn't. Prometheus Books.

Chicago Style (17th ed.) Citation

Lewis, Ralph. Finding Purpose in a Godless World: Why We Care even if the Universe Doesn't. Amherst, New York: Prometheus Books, 2018.

MLA (9th ed.) Citation

Lewis, Ralph. Finding Purpose in a Godless World: Why We Care even if the Universe Doesn't. Prometheus Books, 2018.