In Search of an Educational Ideal: Russian Private Pedagogical Journal of the XIX Century. Global Journal of Science Frontier Research, [S. l.], v. 21, n. I1, p. 1–4, 2021. Disponível em: https://testing.journalofscience.org/index.php/GJSFR/article/view/2896. Acesso em: 4 feb. 2026.