Joko Raharjo, Sentot, Anggraeni In Oktavia, and Lina Oktavia Rahayu. “Education and Mentoring on Organic Fertilizer Using PGPR Biodecomposer for Karang Taruna BABE in Bakalan, Bululawang, Malang Regency”. Engagement: Jurnal Pengabdian Kepada Masyarakat 8, no. 2 (November 13, 2024): 469 -482. Accessed November 10, 2025. http://engagement.fkdp.or.id/index.php/engagement/article/view/1671.