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Corea Pérez, Alejandra Stefany, Dora Elizabeth Martínez Castillo, Rita Nohemy Sibrián de Echeverría, Miguel Angel Carranza Campos, and Edgar Nicolás Ayala. Assessing the English Pronunciation of Students Finishing Their Third Year At the Foreign Language Department At the University of El Salvador, Semester II, 2014. San Salvador: Universidad de El Salvador, 2015.

Corea Pérez, Alejandra Stefany, et al. Assessing the English Pronunciation of Students Finishing Their Third Year At the Foreign Language Department At the University of El Salvador, Semester II, 2014. San Salvador: Universidad de El Salvador, 2015.