REIS, Clóvis. The radio advertising in Brazil: the phases of its historical evolution (1922-1990). Revista de Comunicación, Piura, Perú., v. 3, n. 1, p. 20–35, 2022. Disponível em: https://revistadecomunicacion.com/article/view/2867. Acesso em: 4 feb. 2026.