"International Balzan Prize Foundation - Manuel Castells"
"Holberg Prisen - Manuel Castells"
"Academia Europaea - Manuel Castells."
"University of California Berkeley - Manuel Castells"
"USC Annenberg - School for Communication - Manuel Castells."
"Wikipedia - Manuel Castells"
"University of Oxford - Oxford Internet Institute - Manuel Castells"
"Free dictionary: Manuel Castells"
"Manuel Castells, Theorist of the Network Society – Biography"
"Real Academia de Ciencias Económicas y Financieras - Excmo. Sr. Dr. D. Manuel Castells Oliván"