-. The American Heritage Dictionary of the English Language. Houghton Miffin Company.
Lua i Stíl Chicago (17ú heag.)-. The American Heritage Dictionary of the English Language. Houghton Miffin Company.
Lua MLA (8ú heag.)-. The American Heritage Dictionary of the English Language. Houghton Miffin Company.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.