YURZHENKO, Volodymyr. Forming of content of electronic textbooks of the system of vocational education. Professional Pedagogics, Kyiv, n. 7, p. 58–64, 2014. DOI: 10.32835/2223-5752.2014.7.58-64. Disponível em: https://jrnls.ivet.edu.ua/1/article/view/407. Acesso em: 11 aug. 2026.