Cita APA (7th ed.)

Library of Congress & Library of Congress. Cataloging Policy and Support Office. (2004). Library of Congress classification. Q. Science (2004 ed.). Library of Congress, Cataloging Distribution Service.

Cita Chicago (17th ed.)

Library of Congress i Library of Congress. Cataloging Policy and Support Office. Library of Congress Classification. Q. Science. 2004 ed. Washington, D.C: Library of Congress, Cataloging Distribution Service, 2004.

Cita MLA (9th ed.)

Library of Congress i Library of Congress. Cataloging Policy and Support Office. Library of Congress Classification. Q. Science. 2004 ed. Library of Congress, Cataloging Distribution Service, 2004.