Sinaga, Dearma, Julhendri Sinaga, & Thetty Intan Maharani. " ANALISIS PENGENDALIAN INTERNAL ATAS PERSEDIAAN BARANG DAGANG PADA PT. KIMIA FARMA MEDAN." JURNAL PENELITIAN FISIKAWAN [Online], 4.2 (2021): 37-43. Web. 22 Dec. 2024