Pròlegs i epílegs
Preface: Understanding innovation in the Real Economy at last!
CASTELLS, Manuel. "Preface: Understanding innovation in the Real Economy at last!". En: Innovation and entrepreneurship: a growth model for europe beyond the crisis. Daria Tataj. New York: Tataj innovation library, cop. 2015, pp. 11-16.
(en)
Luces y sombras del urbanismo de Barcelona
CASTELLS, Manuel. “Prólogo: De Barcelona al Mundo”. En: Luces y sombras del urbanismo de Barcelona. Jordi Borja. Barcelona: Editorial UOC, 2010, pp. 9-15. (es)
Handbook of mobile communication studies
CASTELLS, Manuel. "Afterword". En: Handbook of mobile communication studies. Edited by James E. Katz. Cambridge, MA: MIT Press, cop. 2008, pp. 447-450. (en)
The social fabric of the networked city. Géraldine Pflieger
CASTELLS, Manuel. "Preface: the networked city". En: The social fabric of the networked city. Géraldine Pflieger ... [et al.]. London: Routledge, 2008, pp. v-xiii. (en)
Software libre: empresa y administración en España y Cataluña
CASTELLS, Manuel. "Prólogo". En: Software libre: empresa y administración en España y Cataluña. Meritxell Roca. Barcelona: Editorial UOC, 2007, pp. 11-13. (es)
After the symposium: tower of Babel, screen, or establishment of a real-life situation?
CASTELLS, Manuel. "After the symposium: tower of Babel, screen, or establishment of a real-life situation?". En: The Universitas Project : solutions for a post-technological society. Conceived and directed by Emilio Ambasz. New York, NY: The Museum Of Modern Art, cop. 2006, pp. 455-456. (en)