LEVCHYK, I.; CHAIKOVSKA, H.; YANKOVYCH, O.; KUZMA, I.; ROZHKO-PAVLYSHYN, T. Formation of sustainable development competencies in primary school children. Journal of Education Culture and Society, [S. l.], v. 12, n. 2, p. 341–360, 2021. DOI: 10.15503/jecs2021.2.341.360. Disponível em: https://jecs.pl/index.php/jecs/article/view/1367. Acesso em: 16 may. 2022.