Não informado. (1990). ICAO Journal. International Civil Aviation Organization.
Lua i Stíl Chicago (17ú heag.)Não informado. ICAO Journal. Montreal, Canada: International Civil Aviation Organization, 1990.
Lua MLA (8ú heag.)Não informado. ICAO Journal. International Civil Aviation Organization, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.