Cita APA (7a ed.)

Library of Congress. Subject Cataloging Division. (1969). Outline of the Library of Congress classification. Library of Congress.

Cita Chicago Style (17a ed.)

Library of Congress. Subject Cataloging Division. Outline of the Library of Congress Classification. Washington: Library of Congress, 1969.

Cita MLA (9a ed.)

Library of Congress. Subject Cataloging Division. Outline of the Library of Congress Classification. Library of Congress, 1969.