1.
Barrera M. C, Guevara J, Córdoba K, Sánchez E, González K. Comparative diagnosis of the academic average in the seventh grade, of students from unigrade and multigrade elementary schools. Acción y Reflexión Educativa [Internet]. 2021 Jan. 19 [cited 2024 May 19];(46):244-60. Available from: https://revistas.up.ac.pa/index.php/accion_reflexion_educativa/article/view/1970