Kalfar, J. (2017). Spaceman of Bohemia (First edition.). Little, Brown and Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKalfar, Jaroslav. Spaceman of Bohemia. First edition. New York: Little, Brown and Company, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKalfar, Jaroslav. Spaceman of Bohemia. First edition. Little, Brown and Company, 2017.
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