ECHEVARRÍA CEBALLOS, O.; REGUEIRA MARTÍNEZ, D.; PÁEZ RODRÍGUEZ, B. Worksheets in the Directorate of Teaching Learning Process in the formation of Integral General Teacher Secondary School. Mendive. Journal on Education, [S. l.], v. 5, n. 1, p. 65–73, 2006. Disponível em: https://mendive.upr.edu.cu/index.php/MendiveUPR/article/view/205. Acesso em: 22 jul. 2024.