Report on the organization of free and recreational hours. Letras, Lima, Peru, v. 2, n. 5, p. 408–411, 1936. DOI: 10.30920/letras.2.5.5. Disponível em: https://revistaletras.unmsm.edu.pe/index.php/le/article/view/1135. Acesso em: 13 sep. 2026.