GRANIEL VELASCO, Pablo Alfonso; ANGULO CASTELLANOS, Jesús Manuel. Otto Wolter Hayer: médico, agricultor y constructor. Cinzontle, [S. l.], v. 12, n. 26, p. 12–19, 2021. Disponível em: https://revistacinzontle.ujat.mx/Cinzontle/article/view/3985. Acesso em: 29 oct. 2025.