Não informado. (2019). Aviation Week, Including Space Technology. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Aviation Week, Including Space Technology. New York: McGraw-Hill, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Aviation Week, Including Space Technology. McGraw-Hill, 2019.
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