Zuana, K. R., and I. Sidharta. “Sistem Informasi Pemotongan PPh 21 Atas Gaji Karyawan PT. Rajawali Tehnik”. Jurnal Computech &Amp; Bisnis (e-Journal), vol. 8, no. 2, Dec. 2014, pp. 112-21, https://jurnal.stmik-mi.ac.id/index.php/jcb/article/view/174.