Não informado. (1974). Memoirs of National Institute of Polar Research. National Institute of Polar Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Memoirs of National Institute of Polar Research. Tokyo: National Institute of Polar Research, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Memoirs of National Institute of Polar Research. National Institute of Polar Research, 1974.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.