Mulyana, Asep, and Nida Nurcahyani. “The Effect of the Puzzle Playing Method on Improving the Cognitive Development of Children Aged 4-6 Years”. KnE Life Sciences 7, no. 2 (February 7, 2022): 542–548. Accessed April 25, 2024. https://knepublishing.com/index.php/KnE-Life/article/view/10354.