Oktavia, Tanty. “Pemodelan Employee Self Service Sistem Sebagai Penunjang Human Resources Department”. Ultima InfoSys : Jurnal Ilmu Sistem Informasi 6, no. 1 (June 30, 2015): 27-35. Accessed November 25, 2024. https://ejournals.umn.ac.id/index.php/SI/article/view/276.