Suparno, S. y Iasha, V. (2019) «Effectiveness of Social Studies Learning in Elementary School Using Strategy of Everyone is a Teacher Here (EiTH)», Opción, 350, pp. 1068-1092. Disponible en: http://www.produccioncientifica.luz.edu.ve/index.php/opcion/article/view/30823 (Accedido: 2agosto2025).