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 (Sep. 2021), 20–29. DOI:https://doi.org/10.31849/jitacs.v1i1.6419.