OKOROAFOR, Joachim. Freedom: The Substance of Man’s Existence. American Journal of Social and Humanitarian Research, [S. l.], v. 4, n. 5, p. 68–80, 2023. DOI: 10.31150/ajshr.v4i5.2208. Disponível em: https://globalresearchnetwork.us/index.php/ajshr/article/view/2208. Acesso em: 25 jul. 2025.