1.
Astri A, Purnama I, Bakari DH. Cognitive development analysis of 3-year-old children in the aspect of simple problem-solving. J. Early Child. Care. Educ. [Internet]. 2026Oct.21 [cited 2026Oct.29];9(1):62-9. Available from: http://journal2.uad.ac.id/index.php/jecce/article/view/15513