APA (7th ed.) Citation

Barrow, J. D., Tipler, F. J., & Wheeler, J. A. (1986). The anthropic cosmological principle. Oxford University Press.

Chicago Style (17th ed.) Citation

Barrow, John D., Frank J. Tipler, and John A. Wheeler. The Anthropic Cosmological Principle. Oxford, England: Oxford University Press, 1986.

MLA (9th ed.) Citation

Barrow, John D., et al. The Anthropic Cosmological Principle. Oxford University Press, 1986.