Wiradhana, A., S. Ritonga, and M. S. Lubis. “The Effectiveness of the Use of the State Civil Apparatus E-Performance System in the Staffing and Human Resource Development Agency of Serdang Bedagai District”. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE), Vol. 9, no. 1, Jan. 2026, pp. 2539-45, doi:10.31538/iijse.v9i1.8614.