UTOYO, S.; ISMANIAR, I.; HAZIZAH, N.; PUTRI, E. A.; SIHOMBING, S. C. A Practical Study of the Use of AI-Based E-Book Guides to Improve Early Childhood Mathematics Skills. Qubahan Academic Journal, [S. l.], v. 6, n. 1, p. 308–324, 2026. DOI: 10.48161/qaj.v6n1a2176. Disponível em: https://journal.qubahan.com/index.php/qaj/article/view/2176. Acesso em: 9 feb. 2026.