Marín Cervantes, Irene. «Drilling and Color-Coding Systems: A Comparative Analysis of Two Pronunciation Techniques to Improve L2 Learners’ Production of the -(e)d Inflectional Ending». Revista de Filología y Lingüística de la Universidad de Costa Rica 34, no. 2 (agosto 23, 2012): 143–163. Accedido abril 18, 2024. https://revistas.ucr.ac.cr/index.php/filyling/article/view/1297.