Годовые отчеты «Барселоны» и «Реал Мадрида»; Deloitte’s “Football Money League” (February, 2012).

Jimmy Burns. Who’s the Greatest of Them All? Barcelona! // Newsweek, June 13, 2011.

A Different Perspective: More Than a Club, but Also More Than a Business // Pictet Report, Winter, 2012; ESADE: “Carles Folguera, Director of Barcelona FC’s La Masia” (December 20, 2011).