“Effect of Play Group and Biopsychosocial Factors on the Independence Development of Preschool Children in Surakarta”, J Matern Child Health, vol. 2, no. 4, pp. 284–296, Jul. 2017, Accessed: Nov. 27, 2025. [Online]. Available: https://www.thejmch.com/index.php/thejmch/article/view/64