Ramírez Amaya , Anayeli, and Gonzalo Sánchez Lara. “ 6th Grade of Primary School) State of Veracruz”. Universita Ciencia 5 (August 1, 2016): 15–23. Accessed November 14, 2026. https://universita.ux.edu.mx/universita-ciencia/article/view/1148.