López del Ramo, Joaquín. “Photographic Treatment in Newspaper Sites from Porto University. Descriptive Analysis Based on Quality Indicators”. Revista General de Información y Documentación 25, no. 2 (December 17, 2015): 469–492. Accessed July 10, 2026. https://revistas.ucm.es/index.php/RGID/article/view/51240.