Library of Congress & Library of Congress. Cataloging Policy and Support Office. (1996). Library of Congress classification. Q. Science (1996 ed.). Library of Congress, Cataloging Distribution Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLibrary of Congress और Library of Congress. Cataloging Policy and Support Office. Library of Congress Classification. Q. Science. 1996 ed. Washington, D.C: Library of Congress, Cataloging Distribution Service, 1996.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLibrary of Congress और Library of Congress. Cataloging Policy and Support Office. Library of Congress Classification. Q. Science. 1996 ed. Library of Congress, Cataloging Distribution Service, 1996.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.