Rakhman, Agus Arif. “Penyusunan Standar Operasional Prosedur (SOP) Perencanaan Pengadaan Barang/Jasa”. Jurnal Pengadaan Barang dan Jasa 2, no. 1 (April 30, 2023): 47–59. Accessed April 29, 2026. https://journal.ifpi.or.id/index.php/jpbj/article/view/36.