Rufner, G. G. (1964). Encyclopedia of associations. Gale Research.
Lua i Stíl Chicago (17ú heag.)Rufner, George G. Encyclopedia of Associations. Detroit, MI: Gale Research, 1964.
Lua MLA (9ú heag.)Rufner, George G. Encyclopedia of Associations. Gale Research, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.