Arias Porras, M., Fernández Vizcaíno, B., & Montoya González, Z. (2002). Teacher's guide to improving the language learning strategies of seventh grade english students in urban, marginal and rural public high schools. Heredia, C. R.: M. Arias P..

Arias Porras, Marjorie, Bibiana Fernández Vizcaíno, and Zaida Montoya González. Teacher's Guide to Improving the Language Learning Strategies of Seventh Grade English Students in Urban, Marginal and Rural Public High Schools. Heredia, C. R.: M. Arias P., 2002.

Arias Porras, Marjorie, Bibiana Fernández Vizcaíno, and Zaida Montoya González. Teacher's Guide to Improving the Language Learning Strategies of Seventh Grade English Students in Urban, Marginal and Rural Public High Schools. Heredia, C. R.: M. Arias P., 2002.