Acosta Marenco, Erika Flavia and Seballos Mejía, Javier José and Huang, Yu-Teng (2011) Factors that interfere in the accomplishment of an advanced-mid level of oral proficiency by the graduation process students term I-2010 of the Licenciatura en Idioma Inglés opción enseñanza at the foreign languages Department of the University of El Salvador. Bachelor thesis, Universidad de El Salvador.