Não informado. (1926). International bibliography of historical sciences. International Committee of Historical Sciences.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Bibliography of Historical Sciences. Paris: International Committee of Historical Sciences, 1926.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Bibliography of Historical Sciences. International Committee of Historical Sciences, 1926.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.