[1]
Syaiputra Wahyuda Meisa Diningrat et al. 2019. Modified Bottle Cap for Improving Children’s Arithmetic Ability. JPUD - Jurnal Pendidikan Usia Dini. 13, 2 (Dec. 2019), 249–263. DOI:https://doi.org/10.21009/JPUD.132.04.