Rangga Dwi Darmawan, and Siti Ning Farida. “Prosedur Pengoperasionalan Pengadaan Barang Dan Jasa Pada PT. Kereta Api Indonesia (Persero) DAOP VIII Surabaya”. JURNAL PENGABDIAN MASYARAKAT INDONESIA 3, no. 1 (February 29, 2024): 27–36. Accessed April 22, 2025. https://journalshub.org/index.php/jpmi/article/view/3313.