Oliva Muñoz, S. B., Hernández Joaquín, R. D., & Salazar Carranza, B. G. (2008). Factors influencing on the english pronunciation proficiency level of students after finishing the third year of Bachelor of Arts in english, specialty: Teaching major of the Foreign Language Department at the University of El Salvador. San Salvador: Universidad de El Salvador.

Oliva Muñoz, Sandra Beatriz, Rosa Delmy Hernández Joaquín, and Briseida Guadalupe Salazar Carranza. Factors Influencing On the English Pronunciation Proficiency Level of Students After Finishing the Third Year of Bachelor of Arts in English, Specialty: Teaching Major of the Foreign Language Department At the University of El Salvador. San Salvador: Universidad de El Salvador, 2008.

Oliva Muñoz, Sandra Beatriz, Rosa Delmy Hernández Joaquín, and Briseida Guadalupe Salazar Carranza. Factors Influencing On the English Pronunciation Proficiency Level of Students After Finishing the Third Year of Bachelor of Arts in English, Specialty: Teaching Major of the Foreign Language Department At the University of El Salvador. San Salvador: Universidad de El Salvador, 2008.