Alana Fisher. Lionel Messi Joins Facebook, Reaches 6,7 Million Fans, Gains 40,000 Interactions in a Few Hours // Brand New Directions, April 7, 2011.
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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).