Inovasi financial technology: Implementasi aplikasi randu dalam pencatatan keuangan umkm tumbas coffee tarakan. JUMBO Jurnal Pengabdian Masyarakat Borneo, [S. l.], v. 1, n. 01, p. 11–19, 2026. Disponível em: https://jurnal.ubt.ac.id/index.php/jumbo/article/view/699. Acesso em: 21 sep. 2026.