Siti Qomariah, and Luluk Iffatur Rocmah. 2025. “Abacus Games Foster Concentration and Socioemotional Skills in Early Childhood: Permainan Abacus Membantu Mengembangkan Konsentrasi Dan Keterampilan Sosial-Emosional Pada Anak Usia Dini”. Academia Open 10 (1):10.21070/acopen.10.2025.12305. https://doi.org/10.21070/acopen.10.2025.12305.