Não informado. (2004). Government Reports Announcements. U.S. Department of Commerce, National Technical Information Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Government Reports Announcements. Springfield, Va: U.S. Department of Commerce, National Technical Information Service, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Government Reports Announcements. U.S. Department of Commerce, National Technical Information Service, 2004.
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