ШАЛАЦЬКА, Г. М. Distance education courses: the international experience. Educational Dimension, Kryvyi Rih, Ukraine, v. 46, p. 266–272, 2015. DOI: 10.31812/educdim.v46i0.2550. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/2550. Acesso em: 17 may. 2024.