Puentes Vidal, Daniel (2006). "Niveles Educacionales" (in Spanish). San Pedro de la Paz, Chile: Colegio Instituto San Pedro. Archived from the original on 27 February 2013. Retrieved 30 August 2012.
"Matrícula Regional". Secretaría Regional Ministerial de Educación (Región del Libertador General Bernardo O'Higgins) (in Spanish). Rancagua, Chile: Ministry of Education of Chile. 2010. Archived from the original on 16 July 2010. Retrieved 30 August 2012.
"Matrícula Regional". Secretaría Regional Ministerial de Educación (Región del Libertador General Bernardo O'Higgins) (in Spanish). Rancagua, Chile: Ministry of Education of Chile. 2010. Archived from the original on 16 July 2010. Retrieved 30 August 2012.
webcitation.org
Puentes Vidal, Daniel (2006). "Niveles Educacionales" (in Spanish). San Pedro de la Paz, Chile: Colegio Instituto San Pedro. Archived from the original on 27 February 2013. Retrieved 30 August 2012.