PEMANFAATAN GLOBAL POSITIONING SYSTEM (GPS) PADA PRESENSI KARYAWAN BERBASIS SMARTPHONE. Elkom: Jurnal Elektronika dan Komputer, [S. l.], v. 13, n. 2, p. 139–150, 2020. DOI: 10.51903/elkom.v13i2.307. Disponível em: https://journal.stekom.ac.id/index.php/elkom/article/view/307. Acesso em: 25 jun. 2026.