O'Brien, D. (2009). In the heat of battle: A history of those who rose to the occasion and those who didn't. Osprey.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रO'Brien, Donough. In the Heat of Battle: A History of Those Who Rose to the Occasion and Those Who Didn't. Oxford, U.K. ; New York: Osprey, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रO'Brien, Donough. In the Heat of Battle: A History of Those Who Rose to the Occasion and Those Who Didn't. Osprey, 2009.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.