Leal Filho, W. (2011). World trends in education for sustainable development. Peter Lang Publishing,Inc.
Chicago-referens (17:e uppl.)Leal Filho, Walter. World Trends in Education for Sustainable Development. Frankfurt am Main: Peter Lang Publishing,Inc, 2011.
MLA-referens (9:e uppl.)Leal Filho, Walter. World Trends in Education for Sustainable Development. Peter Lang Publishing,Inc, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.