Picó, Fernando. (2006) Chapter 11: A Slaveholding Society, 1824-1868 In History of Puerto Rico: A Panorama of Its People. Princeton, NJ: Markus Wiener Publishers.
Picó, Fernando. (2006) Chapter 12: The Hour of the Mountains, 1868-1989 In History of Puerto Rico: A Panorama of Its People. Princeton, NJ: Markus Wiener Publishers.