Cortes Cuèllar, D. P., Marroquìn Valiente, B. E., Henrìquez Laguàn, A. V., Minero Chinchilla, A. R., Rodrìguez Salguero, J. R., & Salas Eguizabal, N. R. (2016). A methodological proposal to teach english to pre-school students at kinder San Rafael, Santa Ana during 2015. Santa Ana, El Salvador: Universidad de El Salvador.

Cortes Cuèllar, Diana Patricia, Blanca Estela Marroquìn Valiente, Ana Victoria Henrìquez Laguàn, Ana Ruth Minero Chinchilla, Judith Raquel Rodrìguez Salguero, and Nanci Rebeca Salas Eguizabal. A Methodological Proposal to Teach English to Pre-school Students At Kinder San Rafael, Santa Ana During 2015. Santa Ana, El Salvador: Universidad de El Salvador, 2016.

Cortes Cuèllar, Diana Patricia, et al. A Methodological Proposal to Teach English to Pre-school Students At Kinder San Rafael, Santa Ana During 2015. Santa Ana, El Salvador: Universidad de El Salvador, 2016.