PICADO MESÉN, Marta Eugenia. Semblanza: Hernán Gutiérrez Gurdián. Costarican Social Work Journal, [S. l.], n. 28, p. 121–124, 2017. Disponível em: https://revista.trabajosocial.or.cr/index.php/revista/article/view/285. Acesso em: 13 may. 2026.