Izquierdo Tugas, Pere; Juan Tresserras, Jordi; Matamala Mellin, Juan Carlos, eds. (September 2005). "Heritage Interpretation Centres, The Hicira Handbook". Barcelona: Diputació de Barcelona. Retrieved August 20, 2014. {{cite web}}: |first3= has generic name (help)CS1 maint: multiple names: authors list (link)