YETER ŞIMŞEKLI. The Original Activities for Environmental Education and Their Effects on Students (A Case Study in Bursa) . Elementary Education Online, [S. l.], v. 9, n. 2, p. 552–560, 2010. Disponível em: https://ilkogretim-online.org/index.php/pub/article/view/744. Acesso em: 5 jan. 2025.