Isiani, N., Sukrin, S. and Fuaduddin, F. (2026) “Optimizing Children’s Vocabulary Understanding Through Singing Activities in Early Childhood Education”, Edu Happiness: Jurnal Ilmiah Perkembangan Anak Usia Dini, 5(2), pp. 249–265. doi: 10.62515/eduhappiness.v5i2.1461.