Wheeler, J. A. (1990). A journey into gravity and spacetime. Scientific American Library.
Citazione stile Chigago Style (17a edizione)Wheeler, John Archibald. A Journey into Gravity and Spacetime. New York: Scientific American Library, 1990.
Citatione MLA (9a ed.)Wheeler, John Archibald. A Journey into Gravity and Spacetime. Scientific American Library, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.