BALALAIEVA, O. Y. FACET CLASSIFICATIONS OF E-LEARNING TOOLS. Information Technologies and Learning Tools, [S. l.], v. 38, n. 6, p. 41–52, 2013. DOI: 10.33407/itlt.v38i6.926. Disponível em: https://journal.iitta.gov.ua/index.php/itlt/article/view/926. Acesso em: 26 jan. 2022.