Katan, Felicia, and Suklimah Ratih. “ANALISIS SISTEM PENGENDALIAN INTERNAL PEMBELIAN UNTUK MEMINIMALISIR RISIKO KECURANGAN (STUDI PADA SALAH SATU MANUFAKTUR KELAPA DI SURABAYA)”. Journal of Innovation Research and Knowledge 3, no. 4 (September 25, 2023): 813–822. Accessed July 4, 2025. https://www.bajangjournal.com/index.php/JIRK/article/view/6542.