Siti Qomariah, and Luluk Iffatur Rocmah. “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, no. 1 (June 21, 2025): 10.21070/acopen.10.2025.12305. Accessed March 5, 2026. https://acopen.umsida.ac.id/index.php/acopen/article/view/12305.