Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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