APA (7th ed.) Citation

Wheeler, J. A. (1990). A journey into gravity and spacetime. Scientific American Library.

Chicago Style (17th ed.) Citation

Wheeler, John Archibald. A Journey into Gravity and Spacetime. New York: Scientific American Library, 1990.

MLA (8th ed.) Citation

Wheeler, John Archibald. A Journey into Gravity and Spacetime. Scientific American Library, 1990.