Pearl, M. (2019). The day it finally happens: Alien contact, dinosaur parks, immortal humans- and other possible phenomena (First Scribner hardcover edition.). Scribner.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPearl, Mike. The Day It Finally Happens: Alien Contact, Dinosaur Parks, Immortal Humans- and Other Possible Phenomena. First Scribner hardcover edition. New York: Scribner, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPearl, Mike. The Day It Finally Happens: Alien Contact, Dinosaur Parks, Immortal Humans- and Other Possible Phenomena. First Scribner hardcover edition. Scribner, 2019.
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