Hawking, S. (1994). Black Holes And Baby Universes And Other Essays. Bantam Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHawking, Stephen. Black Holes And Baby Universes And Other Essays. London: Bantam Books, 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHawking, Stephen. Black Holes And Baby Universes And Other Essays. Bantam Books, 1994.
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