Paucar Paucar, J. R., & León Villalta, P. A. (2011). Methodology and the use of supplementary material and their influence in the learning of the english language with the students of eighth, ninth and tenth years of basic education at san pedro de vilcabamba national high school, academic year 2010-2011.

Paucar Paucar, José Ronald, and Pedro Alexis León Villalta. Methodology and the Use of Supplementary Material and Their Influence in the Learning of the English Language with the Students of Eighth, Ninth and Tenth Years of Basic Education at San Pedro De Vilcabamba National High School, Academic Year 2010-2011. 2011.

Paucar Paucar, José Ronald, and Pedro Alexis León Villalta. Methodology and the Use of Supplementary Material and Their Influence in the Learning of the English Language with the Students of Eighth, Ninth and Tenth Years of Basic Education at San Pedro De Vilcabamba National High School, Academic Year 2010-2011. 2011.