Library of Congress & Library of Congress. Catalog Maintenance Division. Library of Congress catalog: Books: subjects; a cumulative list of works represented by Library of Congress printed cards. Library of Congress.
Lua i Stíl Chicago (17ú heag.)Library of Congress agus Library of Congress. Catalog Maintenance Division. Library of Congress Catalog: Books: Subjects; a Cumulative List of Works Represented by Library of Congress Printed Cards. Washington: Library of Congress.
Lua MLA (8ú heag.)Library of Congress agus Library of Congress. Catalog Maintenance Division. Library of Congress Catalog: Books: Subjects; a Cumulative List of Works Represented by Library of Congress Printed Cards. Library of Congress.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.