The System of Profound Knowledge - Answer to the Challenges of the XXI Century. Global Journal of Human-Social Science, [S. l.], v. 23, n. E1, p. 19–33, 2023. Disponível em: https://www.socialscienceresearch.org/index.php/GJHSS/article/view/103620. Acesso em: 25 sep. 2026.