Montaluisa-Vivas, Ángel, Edgar Salas-Jaramillo, Leonardo Canga-Unda, and Adriana Ponce-Benavides. “Perception about Textbooks in Math Teaching-Learning of Mathematics”. Cátedra 4, no. 2 (May 26, 2021): 55–69. Accessed May 19, 2024. https://revistadigital.uce.edu.ec/index.php/CATEDRA/article/view/2930.