Cole, R. D. (1937). Modern foreign languages and their teaching. Appleton Century Crofts.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCole, Robert D. Modern Foreign Languages and Their Teaching. New York: Appleton Century Crofts, 1937.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCole, Robert D. Modern Foreign Languages and Their Teaching. Appleton Century Crofts, 1937.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.