Khairiyah, U., H. Hapidin, and S. Wulan. “Critical Thinking Behavior of Early Childhood in Project Based Learning: A Literature Review”. Proceedings of International Conference on Science, Education, and Technology, vol. 11, no. 1, July 2025, pp. 57-63, https://proceeding.unnes.ac.id/ISET/article/view/4407.