APA (7th ed.) Citation

Barrow, J. D., & Tipler, F. J. (1986). The anthropic cosmological principle. Clarendon Press.

Chicago Style (17th ed.) Citation

Barrow, John D., and Frank J. Tipler. The Anthropic Cosmological Principle. Oxford: Clarendon Press, 1986.

MLA (8th ed.) Citation

Barrow, John D., and Frank J. Tipler. The Anthropic Cosmological Principle. Clarendon Press, 1986.