1.
Syaiputra Wahyuda Meisa Diningrat, Janah L, Mardiyah S. Modified Bottle Cap for Improving Children’s Arithmetic Ability. jpud [Internet]. 2019Dec.1 [cited 2024Mar.29];13(2):249 -263. Available from: https://journal.unj.ac.id/unj/index.php/jpud/article/view/11646