Martínez Mora , A. ., O. L. Pérez González, and R. Blanco Sánchez. “CURRENT INVESTIGATIONS ON THE PORTFOLIO EVALUATION IN THE EDUCATIONAL CONTEXT”. Didáctica Y Educación ISSN 2224-2643, vol. 5, no. 4, Dec. 2014, pp. 37-52, https://revistas.ult.edu.cu/index.php/didascalia/article/view/320.