Instruction as an external factor that influences the performance of students from the B.A. in Modern Languages: Specialization in French and English doing their outreach project in public institutions as English teachers, year 2019 - De León Pérez, Jocelyn Alejandra (Tesis para optar al titulo de – (Licenciado en Lenguas Modernas Opción Francés e Ingles ) – Universidad de El Salvador, San Salvador, 2020)
Incluye anexos.