Não informado. (1950). Astronautics Information Literature Search. Jet Propulsion Laboratory, California Institute of Technology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Astronautics Information Literature Search. Pasadena, Calif: Jet Propulsion Laboratory, California Institute of Technology, 1950.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Astronautics Information Literature Search. Jet Propulsion Laboratory, California Institute of Technology, 1950.
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