ANANGONÓ ROSERO, G.; NARANJO NAVAS, C. P. Bolívar Echeverría: on Existencialism. HUMAN REVIEW. International Humanities Review / Revista Internacional de Humanidades, [S. l.], v. 9, n. 2, p. pp. 87–99, 2020. Disponível em: https://www.historicoeagora.net/revHUMAN/article/view/2431. Acesso em: 28 may. 2025.