Levy, J. (2014). Fifty weapons that changed the course of history. Firefly Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLevy, Joel. Fifty Weapons That Changed the Course of History. Richmond Hill, Ontario: Firefly Books, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLevy, Joel. Fifty Weapons That Changed the Course of History. Firefly Books, 2014.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.