Sullivan, W. (1961). Assault on the unknown: The International Geophysical Year. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSullivan, Walter. Assault on the Unknown: The International Geophysical Year. New York: McGraw-Hill, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSullivan, Walter. Assault on the Unknown: The International Geophysical Year. McGraw-Hill, 1961.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.