AVELYA WEDYAN, S.; HADI, H. Relationship between Teacher Competence (Coach) and Improvement of Extracurricular Participants’ Singing Ability. Avant-garde: Jurnal Ilmiah Pendidikan Seni Pertunjukan, [S. l.], v. 2, n. 2, p. 121–128, 2023. DOI: 10.24036/ag.v2i2.105. Disponível em: https://avant-garde.ppj.unp.ac.id/index.php/avant-garde/article/view/105. Acesso em: 5 oct. 2024.