Renaldi P. Tumanggor, Elvira Asril and Guntoro (2021) “SISTEM INFORMASI ABSENSI KARYAWAN MENGGUNAKAN QR CODE (QUICK RESPONSE) DI PT. REDES JAYA PERSADA: EMPLOYEE ATTENDANCE INFORMATION SYSTEM USING QR CODE (QUICK RESPONSE) AT PT. REDES JAYA PERSSADA”, JITACS: Journal of Information Technology and Computer Science, 1(1), pp. 20-29. doi: 10.31849/jitacs.v1i1.6419.