Vásquez López, J. L., Hernández Mendoza, K. M., Regalado Morales, Í. J., Carranza Campos, M. Á., & Contreras Cárcamo, M. S. A comparative study of the english speaking proficiency of the 4th year students from the B.A. in Modern Languages specialization in French and English and students from B.A. in English Teaching at the Foreign Language Department, University of El Salvador, semester i, 2017.

Vásquez López, Jeysel Lisbeth, Karla Maritza Hernández Mendoza, Íngrid Jacqueline Regalado Morales, Miguel Ángel Carranza Campos, and Mauricio Salvador Contreras Cárcamo. A Comparative Study of the English Speaking Proficiency of the 4th Year Students From the B.A. in Modern Languages Specialization in French and English and Students From B.A. in English Teaching At the Foreign Language Department, University of El Salvador, Semester I, 2017.

Vásquez López, Jeysel Lisbeth, et al. A Comparative Study of the English Speaking Proficiency of the 4th Year Students From the B.A. in Modern Languages Specialization in French and English and Students From B.A. in English Teaching At the Foreign Language Department, University of El Salvador, Semester I, 2017.