Harper, F. A. (1949). Liberty, a path to its recovery. Foundation for Economic Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarper, F. A. Liberty, a Path to Its Recovery. Irvington-on-Hudson, N.Y: Foundation for Economic Education, 1949.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHarper, F. A. Liberty, a Path to Its Recovery. Foundation for Economic Education, 1949.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.