Tyson, N. d. (2019). Letters from an astrophysicist (First edition.). W.W. Norton & Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTyson, Neil deGrasse. Letters from an Astrophysicist. First edition. New York, NY: W.W. Norton & Company, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTyson, Neil deGrasse. Letters from an Astrophysicist. First edition. W.W. Norton & Company, 2019.
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