Simarmata, Janner S, Tonni Limbong, ARS Tambunan, Mariati Purnama Simanjuntak, Riswan Limbong, Agung Purnomo, Riesta Devi Kumalasari, et al. “Multimedia of Number Recognition for Early Childhood Using Image Object”. International Journal of Engineering & Technology 7, no. 3.2 (June 20, 2018): 796–798. Accessed November 22, 2024. https://sciencepubco.com/index.php/ijet/article/view/18760.