Gil De Arriba, C. “From Prison Cell to Workshop. The Dueso Penitentiary (Santoña, Spain), a Penal Colony Essay in the First Decades of the Twentieth Century”. Boletín De La Asociación Española De Geografía, no. 67, Jan. 2015, https://bage.age-geografia.es/ojs/index.php/bage/article/view/1848.