L. Mercado, “Jorge I. Domínguez y Alejandro Poiré, Toward Mexico’s Democratization: Parties, Campaigns, Elections and Public Opinion, NY y Londres, 1999, 251P”., PyG, vol. 6, no. 2, pp. 563–566, Apr. 1999, Accessed: Oct. 13, 2026. Available: http://www.politicaygobierno.cide.edu/index.php/pyg/article/view/461