Não informado. (2000). Global Environmental Research. Association of International Research Initiatives for Environmental Studies.
Lua i Stíl Chicago (17ú heag.)Não informado. Global Environmental Research. Tokyo: Association of International Research Initiatives for Environmental Studies, 2000.
Lua MLA (8ú heag.)Não informado. Global Environmental Research. Association of International Research Initiatives for Environmental Studies, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.