CASCALLAR, C.; NÚÑEZ, D. Guía para resolver problemas. Padres y Maestros / Journal of Parents and Teachers, [S. l.], n. 276, p. 24–26, 2014. Disponível em: https://revistas.comillas.edu/index.php/padresymaestros/article/view/2061. Acesso em: 25 abr. 2024.