DLOUHÁ, J. Environmental Values in a dialog with child book. Envigogika, Praha, Czech Republic, v. 5, n. 1, 2010. DOI: 10.14712/18023061.303. Disponível em: https://envigogika.czp.cuni.cz/index.php/Envigogika/article/view/303. Acesso em: 21 oct. 2020.