MAYO-SANTANA, Raúl. Ángel o de la amistad : Ángel A. Román Franco, MD. Puerto Rico Health Sciences Journal, [S. l.], v. 41, n. 4, p. 256–259, 2022. Disponível em: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/3055. Acesso em: 31 oct. 2025.