Avilés Ruiz, J. B., Rodríguez Sánchez, C. E., Gómez Magaña, K. E., Vides de Guzmán, C., & Contreras Cárcamo, M. S. (2020). Factors that affect the speaking performance of the students from levels II to V of the teens english program at CENIUES, year 2019. San Salvador: Universidad de El Salvador.

Avilés Ruiz, Jacqueline Beatriz, Carmen Elizabeth Rodríguez Sánchez, Kevin Ernesto Gómez Magaña, Claudia Vides de Guzmán, and Mauricio Salvador Contreras Cárcamo. Factors That Affect the Speaking Performance of the Students From Levels II to V of the Teens English Program At CENIUES, Year 2019. San Salvador: Universidad de El Salvador, 2020.

Avilés Ruiz, Jacqueline Beatriz, et al. Factors That Affect the Speaking Performance of the Students From Levels II to V of the Teens English Program At CENIUES, Year 2019. San Salvador: Universidad de El Salvador, 2020.