Não informado. (1972). Education. National School Public Relations Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Education. Washington: National School Public Relations Association, 1972.
Lua MLA (8ú heag.)Não informado. Education. National School Public Relations Association, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.