Wilford, J. N. (1998). Scientists seeking for universe's missing energy. Today.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilford, John Noble. "Scientists Seeking for Universe's Missing Energy." Today 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWilford, John Noble. "Scientists Seeking for Universe's Missing Energy." Today, 1998.
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