JANČAŘÍKOVÁ, K. Student portfolio - a convenient form of environmental education assessment. Envigogika, Praha, Czech Republic, v. 2, n. 3, 2007. DOI: 10.14712/18023061.129. Disponível em: https://envigogika.czp.cuni.cz/index.php/Envigogika/article/view/129. Acesso em: 22 oct. 2020.