Alvarado Alas, N. M., Alvarado de Melara, J. V., Sánchez Hernández, P. N., Gómez Alegría, A. G., & Ayala, E. N. The use of authentic materials and its effects on the development of students' oral competence of students from intensive courses of bachelor in english teaching at the foreign language department, University of El Salvador, year 2014.

Alvarado Alas, Nancy Maricela, Judith Verenice Alvarado de Melara, Patricia Nohemí Sánchez Hernández, Ana Grace Gómez Alegría, and Edgar Nicolás Ayala. The Use of Authentic Materials and Its Effects On the Development of Students' Oral Competence of Students From Intensive Courses of Bachelor in English Teaching At the Foreign Language Department, University of El Salvador, Year 2014.

Alvarado Alas, Nancy Maricela, et al. The Use of Authentic Materials and Its Effects On the Development of Students' Oral Competence of Students From Intensive Courses of Bachelor in English Teaching At the Foreign Language Department, University of El Salvador, Year 2014.