Suparno, Suparno, y Vina Iasha. «Effectiveness of Social Studies Learning in Elementary School Using Strategy of Everyone Is a Teacher Here (EiTH)». Opción 350 (agosto 3, 2019): 1068-1092. Accedido mayo 12, 2025. https://mail.produccioncientificaluz.org/index.php/opcion/article/view/30823.