PELAKSANAAN KEGIATAN EKSTRAKURIKULER PADUAN SUARA DI SMPN 11 PADANG. Ag [Internet]. 2025 Oct. 24 [cited 2026 May 21];3(3):134-41. Available from: https://avant-garde.ppj.unp.ac.id/index.php/avant-garde/article/view/319