Não informado. (1936). Sky: Magazine of cosmic news. Amateur Astronomers Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Sky: Magazine of Cosmic News. New York: Amateur Astronomers Association, 1936.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Sky: Magazine of Cosmic News. Amateur Astronomers Association, 1936.
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