Land Tenure Development in Puerto Rico.Archived 2006-09-13 at the Wayback Machine Cathy Bryan. Department of Spatial Information Science and Engineering. University of Maine. Orono, Maine. ca. 2000. Old Town, Maine: James W. Sewall Company. Page 5. Retrieved 14 July 2012.
La Rebelion del Cacique Agüeybaná II.Archived 2012-02-06 at the Wayback Machine En Marcha: Organo del Comite Central del Partido Comunista Maxista Leninista de Ecuador. Seccion: Testimonio y Dialéctica. 8 May 2006. Page 1. Retrieved 14 July 2011.
La Rebelion del Cacique Agüeybaná II.Archived 2012-02-06 at the Wayback Machine En Marcha: Organo del Comite Central del Partido Comunista Maxista Leninista de Ecuador. Seccion: Testimonio y Dialéctica. 8 May 2006. Page 1. Retrieved 14 July 2011.
Land Tenure Development in Puerto Rico.Archived 2006-09-13 at the Wayback Machine Cathy Bryan. Department of Spatial Information Science and Engineering. University of Maine. Orono, Maine. ca. 2000. Old Town, Maine: James W. Sewall Company. Page 5. Retrieved 14 July 2012.