Doubleday, R. Stories of Inventors: The Adventures of Inventors and Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDoubleday, Russell. Stories of Inventors: The Adventures of Inventors and Engineers.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDoubleday, Russell. Stories of Inventors: The Adventures of Inventors and Engineers.
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