International Review for Environmental Strategies. Institute for Global Environmental Strategies.
Lua i Stíl Chicago (17ú heag.)International Review for Environmental Strategies. Institute for Global Environmental Strategies.
Lua MLA (9ú heag.)International Review for Environmental Strategies. Institute for Global Environmental Strategies.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.