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Hernández Salgado, Josué Nehemías, Krissia Beatriz Herrera Barahona, Julio Cesar Quintanilla Juárez, José Israel Oliva, and Mauricio Salvador Contreras Cárcamo. The Importance of the English Language in the Academic Life and Professional Development of the Professors of The University of El Salvador, Main Campus, 2017.

Hernández Salgado, Josué Nehemías, et al. The Importance of the English Language in the Academic Life and Professional Development of the Professors of The University of El Salvador, Main Campus, 2017.