International Journal of Public Opinion Research. World Association for Public Opinion Research.
Lua i Stíl Chicago (17ú heag.)International Journal of Public Opinion Research. World Association for Public Opinion Research.
Lua MLA (9ú heag.)International Journal of Public Opinion Research. World Association for Public Opinion Research.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.