“Forms of Intra-School Project Harvesting Implementation SMA Negeri 9 Padang”. Avant-garde: Jurnal Ilmiah Pendidikan Seni Pertunjukan 1, no. 3 (October 10, 2023): 393–400. Accessed April 19, 2026. https://avant-garde.ppj.unp.ac.id/index.php/avant-garde/article/view/65.