Não informado. (1971). New acquisitions in the IAEA and Unido Libraries. International Atomic Energy Agency.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. New Acquisitions in the IAEA and Unido Libraries. Vienna: International Atomic Energy Agency, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. New Acquisitions in the IAEA and Unido Libraries. International Atomic Energy Agency, 1971.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.