APA (7th ed.) Citation

Barrow, J. D., & Tipler, F. J. (1988). The anthropic cosmological principle. Oxford university Press.

Chicago Style (17th ed.) Citation

Barrow, John D., and Frank J. Tipler. The Anthropic Cosmological Principle. Oxford: Oxford university Press, 1988.

MLA (9th ed.) Citation

Barrow, John D., and Frank J. Tipler. The Anthropic Cosmological Principle. Oxford university Press, 1988.