Pérez Pérez, K. R., Torres Pérez, E. E., Navarro Vargas, J. M., & Garay Salinas, R. (2010). The use of the mother tongue (L1) in foreign language classes. San Salvador: Universidad de El Salvador.
Chicago Style CitationPérez Pérez, Katya Rebeca, Elías Enríque Torres Pérez, José Miguel Navarro Vargas, and Ricardo Garay Salinas. The Use of the Mother Tongue (L1) in Foreign Language Classes. San Salvador: Universidad de El Salvador, 2010.
MLA CitationPérez Pérez, Katya Rebeca, Elías Enríque Torres Pérez, José Miguel Navarro Vargas, and Ricardo Garay Salinas. The Use of the Mother Tongue (L1) in Foreign Language Classes. San Salvador: Universidad de El Salvador, 2010.
Warning: These citations may not always be 100% accurate.