VAGANOVA, O. I.; SIROTYK, S. D.; POPKOVA, A. A.; SMIRNOVA, Z. V.; BULAEVA, M. N. Additional education in higher professional educational institution. Amazonia Investiga, [S. l.], v. 8, n. 22, p. 305–310, 2019. Disponível em: https://amazoniainvestiga.info/index.php/amazonia/article/view/448. Acesso em: 3 jul. 2024.