Galfard, C. (2016). The universe in your hand: A journey through space, time, and beyond (First U.S. edition.). Flatiron Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGalfard, Christophe. The Universe in Your Hand: A Journey Through Space, Time, and Beyond. First U.S. edition. New York: Flatiron Books, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGalfard, Christophe. The Universe in Your Hand: A Journey Through Space, Time, and Beyond. First U.S. edition. Flatiron Books, 2016.
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