Leal Filho, W. (2011). World trends in education for sustainable development. Peter Lang Publishing,Inc.
Chicago-viite (17. p.)Leal Filho, Walter. World Trends in Education for Sustainable Development. Frankfurt am Main: Peter Lang Publishing,Inc, 2011.
MLA-viite (9. p.)Leal Filho, Walter. World Trends in Education for Sustainable Development. Peter Lang Publishing,Inc, 2011.
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