NUGROHO, M. A.; SUPRIYADI, S.; LESTARI, W. Development of Instruments Performance Assessment Materials Singing for Students Junior High School in District Sambas Based on Android. International Conference on Science, Education, and Technology, [S. l.], v. 8, n. 1, p. 1135–1142, 2022. Disponível em: https://proceeding.unnes.ac.id/ISET/article/view/1905. Acesso em: 29 mar. 2024.