Tarigan, Vitryani, Marintan Saragih, and Andi Sagala. “Penerapan Pengendalian Internal Terhadap UMKM Toko Jasa Fotokopi Dan ATK Ushima Pematang Siantar”. Jurnal Ilmiah Accusi 6, no. 1 (May 30, 2024): 54–65. Accessed September 27, 2024. http://jurnal.usi.ac.id/index.php/jia/article/view/304.