R. D. Putman, «Bowling alone: the collapse and revival of american community, NY: Simon and Shuster, 2000, 541 p»., PyG, vol. 9, n.º 1, pp. 274–276, abr. 2002, Accedido: oct. 13, 2026. Disponible en: http://politicaygobierno.cide.edu/index.php/pyg/article/view/384