PH, L., E. Esti Mediastini, and Y. Basthomi. “Psychosocial Development Description of Preschool-Aged Children”. Proceedings of the International Conference on Nursing and Health Sciences, Vol. 1, no. 1, Nov. 2020, pp. 15-20, https://jurnal.globalhealthsciencegroup.com/index.php/PICNHS/article/view/267.