DIDENKO, Oleksandr. Сurrent issues of development and introduction of electronic textbooks into vocational education system. Professional Pedagogics, Kyiv, n. 7, p. 46–52, 2014. DOI: 10.32835/2223-5752.2014.7.46-52. Disponível em: https://jrnls.ivet.edu.ua/1/article/view/405. Acesso em: 10 jul. 2026.