Barros de Sousa, E. S., W. Gomes Reis Lopes, and O. M. de Carvalho Berti. “Community Radio and Sustainable Development: Study in the Semi-Arid Region of Piauí, Brazil”. Espacio Abierto, Vol. 30, no. 1, Mar. 2021, pp. 33-55, doi:10.5281/zenodo.4683663.