Khoirunnisa, Khiyar, Eti Nurhayati, and Jazariyah Jazariyah. “The Effect of Using Number Piggy Bank Media on the Symbolic Thinking Ability of 5-6 Years Old Children”. GENIUS: Indonesian Journal of Early Childhood Education 4, no. 2 (December 31, 2023): 193–208. Accessed July 2, 2025. https://genius.uinkhas.ac.id/index.php/gns/article/view/146.