Anangonó Rosero, G., & Naranjo Navas, C. P. (2020). Bolívar Echeverría: on Existencialism. HUMAN REVIEW. International Humanities Review / Revista Internacional De Humanidades, 9(2), pp. 87–99. Retrieved from https://www.historicoeagora.net/revHUMAN/article/view/2431