Perkembangan Kognitif: Teori Jean Piaget. Intelektualita: Journal of Education Sciences and Teacher Training, [S. l.], v. 3, n. 1, 2015. DOI: 10.22373/ji.v3i1.197. Disponível em: https://jurnal.ar-raniry.ac.id/index.php/intel/article/view/197. Acesso em: 29 oct. 2025.