PENGARUH PERMAINAN ULAR TANGGA TERHADAP PERKEMBANGAN SOSIAL ANAK USIA 4-6 TAHUN. Healthy Journal, [S. l.], v. 7, n. 1, p. 30–37, 2021. Disponível em: https://ejournal.unibba.ac.id/index.php/healthy/article/view/488. Acesso em: 20 aug. 2026.