Downs, M. (2020). Invention of the combustion engine. Rourke Educational Media.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDowns, Mike. Invention of the Combustion Engine. [Vero Beach, Florida]: Rourke Educational Media, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDowns, Mike. Invention of the Combustion Engine. Rourke Educational Media, 2020.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.