Madrid, 6 December 1968 - Institutional correspondence Luis Carrero Blanco's letter to Florentino Pérez Embid
Jeanne Siegel (ed.), <em>Artwords: Discourse on the ‘60s and ‘70s</em>, Ann Arbor: UMI Research Press, 1985, 101-119 - Essay “How Effective Is Social Protest Art? (Vietnam)”