Rodríguez Garzón, I., M. Martínez-Fiestas, and M. López Alonso. “The Perceived Risk by the Construction Worker: What Role Does the Trade Play?”. Revista De La Construcción. Journal of Construction, vol. 12, no. 3, Dec. 2013, pp. 86-93, http://146.155.94.136/index.php/RDLC/article/view/13648.