O'Brian, P. (2022). The hundred days. W. W. Norton & Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रO'Brian, Patrick. The Hundred Days. New York: W. W. Norton & Company, 2022.
एमएलए (8वां संस्करण) प्रशस्ति पत्रO'Brian, Patrick. The Hundred Days. W. W. Norton & Company, 2022.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.