VIONA FITRIANI; SARI NUZULLINA RAHMADHANI. Pengaruh Modal Kerja, Pengguna E-Commerce, dan Sistem Pengendalian Internal terhadap Pendapatan UMKM Dikecamatan Medan Deli . OPTIMAL Jurnal Ekonomi dan Manajemen, [S. l.], v. 5, n. 3, p. 558–572, 2025. DOI: 10.55606/optimal.v5i3.7493. Disponível em: https://researchhub.id/index.php/optimal/article/view/7493. Acesso em: 21 jul. 2025.