Sugihartono, T., P. Nabil Hakiki, Maxrizal, and R. . Rian chrisna Putra. “Improving Employee Performance and Discipline Through Android-Based Employee Attendance Applications: Meningkatkan Kinerja Dan Disiplin Karyawan Melalui Aplikasi Absensi Karyawan Berbasis Android”. SYSTEMATICS, vol. 5, no. 1, Mar. 2023, pp. 588-93, doi:10.35706/sys.v5i1.7903.