Library of Congress. Copyright Office. U.S. Copyright Renewals, 1953 January - June.
Lua i Stíl Chicago (17ú heag.)Library of Congress. Copyright Office. U.S. Copyright Renewals, 1953 January - June.
Lua MLA (9ú heag.)Library of Congress. Copyright Office. U.S. Copyright Renewals, 1953 January - June.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.