Mancía Valle, J. A., Sinto Masín, J. F., Zuñiga Martínez, C. I., & Rosales Baltes, A. R. (2008). A descriptive study about the functionality of the program of distance education focused in the subject of english for senior students in this program, in the public schools: Complejo Educativo Pedro F. Cantor, Centro Escolar República de Haiti, Instituto de Educación a Distancia Laura Vicuña and Centro Educativo Católico María Mazzarello located in Sonsonate and Santa Tecla. San Salvador: Universidad de El Salvador.

Mancía Valle, José Alfredo, José Félix Sinto Masín, Cristina Isabel Zuñiga Martínez, and Andrés Roberto Rosales Baltes. A Descriptive Study About the Functionality of the Program of Distance Education Focused in the Subject of English for Senior Students in This Program, in the Public Schools: Complejo Educativo Pedro F. Cantor, Centro Escolar República De Haiti, Instituto De Educación a Distancia Laura Vicuña and Centro Educativo Católico María Mazzarello Located in Sonsonate and Santa Tecla. San Salvador: Universidad de El Salvador, 2008.

Mancía Valle, José Alfredo, José Félix Sinto Masín, Cristina Isabel Zuñiga Martínez, and Andrés Roberto Rosales Baltes. A Descriptive Study About the Functionality of the Program of Distance Education Focused in the Subject of English for Senior Students in This Program, in the Public Schools: Complejo Educativo Pedro F. Cantor, Centro Escolar República De Haiti, Instituto De Educación a Distancia Laura Vicuña and Centro Educativo Católico María Mazzarello Located in Sonsonate and Santa Tecla. San Salvador: Universidad de El Salvador, 2008.