Statistical Journal of the UN Economic Commission for Europe. IOS Press.
Lua i Stíl Chicago (17ú heag.)Statistical Journal of the UN Economic Commission for Europe. IOS Press.
Lua MLA (9ú heag.)Statistical Journal of the UN Economic Commission for Europe. IOS Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.