Dopsch, A., Patzelt, E., Beard, M. G., & Marshall, N. (1937). The economic and social foundations of European civilization. K. Paul, Trench, Trubner, & co., ltd..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDopsch, Alfons, Erna Patzelt, Marian Gertrude Beard, और Nadine Marshall. The Economic and Social Foundations of European Civilization. K. Paul, Trench, Trubner, & co., ltd., 1937.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDopsch, Alfons, et al. The Economic and Social Foundations of European Civilization. K. Paul, Trench, Trubner, & co., ltd., 1937.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.