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Carrillo Pérez, Idayris Yolima; Cotes Mejía, Micael Segundo (2000-02-07). Ley 570 de 2000 [Law 570 of 2000] (in Spanish). Bogotá: Diario Oficial, Congress of Colombia. ISSN1657-6241. Retrieved 2014-12-15.
Gómez Naranjo, Pedro Alejandro (1963). La sal de la historia [The Salt of History] (in Spanish). Bucaramanga: Departamental Press. OCLC4934098.
Carrillo Pérez, Idayris Yolima; Cotes Mejía, Micael Segundo (2000-02-07). Ley 570 de 2000 [Law 570 of 2000] (in Spanish). Bogotá: Diario Oficial, Congress of Colombia. ISSN1657-6241. Retrieved 2014-12-15.