Não informado. (1927). Proceedings and addresses of the American Philosophical Association. American Philosophical Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings and Addresses of the American Philosophical Association. Newark, Del: American Philosophical Association, 1927.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings and Addresses of the American Philosophical Association. American Philosophical Association, 1927.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.