Emmelin, L. Environmental education at university level. Council of Europe.
Lua i Stíl Chicago (17ú heag.)Emmelin, Lars. Environmental Education at University Level. Council of Europe.
Lua MLA (8ú heag.)Emmelin, Lars. Environmental Education at University Level. Council of Europe.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.