SOBRINHO, C. W. A. P.; COSTA, A. C. History, situation and reinforcement of the bell towers of the basilica of Penha-Recife-Brazil. Revista ALCONPAT, [S. l.], v. 6, n. 3, p. 200–213, 2016. DOI: 10.21041/ra.v6i3.148. Disponível em: https://revistaalconpat.org/index.php/RA/article/view/148. Acesso em: 11 nov. 2025.