Cita APA (7th ed.)

Library of Congress & Subjet Cataloging Division. (2007). Library of Congress Subject Headings (30th ed.). The National Bibliographic Service.

Cita Chicago (17th ed.)

Library of Congress i Subjet Cataloging Division. Library of Congress Subject Headings. 30th ed. Washington: The National Bibliographic Service, 2007.

Cita MLA (9th ed.)

Library of Congress i Subjet Cataloging Division. Library of Congress Subject Headings. 30th ed. The National Bibliographic Service, 2007.