GURYANOVA, O. S. FERNE: LABOR PRINCIPLE AND MODERN REFORM SCHOOLS. Pedagogy of Higher and Secondary Education, Kryvyi Rih, Ukraine, v. 22, p. 223–229, 2008. DOI: 10.31812/educdim.6803. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/6803. Acesso em: 22 nov. 2024.