Vienna Convention for the Protection of the Ozone Layer (1985). Great Neck Publishing.
Lua i Stíl Chicago (17ú heag.)Vienna Convention for the Protection of the Ozone Layer (1985). Great Neck Publishing.
Lua MLA (9ú heag.)Vienna Convention for the Protection of the Ozone Layer (1985). Great Neck Publishing.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.