Wagner, G. A. (1937). Letter to Mortimer Schwager, December 16, 1937. Saint Louis University Libraries Digitization Center.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWagner, Gerdt A. Letter to Mortimer Schwager, December 16, 1937. Saint Louis University Libraries Digitization Center, 1937.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWagner, Gerdt A. Letter to Mortimer Schwager, December 16, 1937. Saint Louis University Libraries Digitization Center, 1937.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.