APA-čujuhus (7. p.)
Wheeler, J. A. A Journey into Gravity and Spacetime. Scientific American.
Chicago-čujuhus (17. p.)
Wheeler, John Archibald. A Journey into Gravity and Spacetime. Nueva York, EUA: Scientific American.
MLA-čujuhus (9. p.)
Wheeler, John Archibald. A Journey into Gravity and Spacetime. Scientific American.
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