Babullah, Rubi. 2022. “Teori Perkembangan Kognitif Jean Piaget Dan Penerapannya Dalam Pembelajaran: Jean Piaget’s Theory of Cognitive Development and Its Application in Learning”. Epistemic: Jurnal Ilmiah Pendidikan 1 (2):131-52. https://doi.org/10.70287/epistemic.v1i2.10.