Damanik AR, Hartama D, Sumarno S, Gunawan I. Sistem Presensi Pegawai Berbasis Digital Signatures Dan Gps Location. Jurnal Ilmu Multidisiplin [Internet]. 2023 Feb. 28 [cited 2025 Sep. 17];1(1):30-6. Available from: https://ejournal.cvrobema.com/index.php/dike/article/view/11