YULI PRASETYO, D.; ROSLIANA; RASYID RIDHA, M.; YUNITA, F.; USMAN. E-COMMERCE TRAINING FOR UMKM IN THE COASTAL ZONE OF INDRAGIRI HILIR DISTRICT CASE STUDY ON D-PRO AUDIO SOUND SYSTEM. LANDMARK : (Jurnal Pengabdian Masyarakat), v. 2, n. 3, p. 77-84, 31 Oct. 2024.