Silva Pérez, R. «Small and Medium-Sized Town and City Landscape Characterization: Methodological Proposal Applied to Constantina (sierra Norte Mountains, Seville Province)». Boletín De La Asociación De Geógrafos Españoles, n.º 64, abril de 2014, https://bage.age-geografia.es/ojs/index.php/bage/article/view/1716.