Leal Filho, W. (2011). World trends in education for sustainable development. Peter Lang Publishing,Inc.
Lua i Stíl Chicago (17ú heag.)Leal Filho, Walter. World Trends in Education for Sustainable Development. Frankfurt am Main: Peter Lang Publishing,Inc, 2011.
Lua MLA (9ú heag.)Leal Filho, Walter. World Trends in Education for Sustainable Development. Peter Lang Publishing,Inc, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.