Alfiazli, M. D., and S. Rahayu. “Supervision, Sanctions, and Leadership As Determining Factors of Employee Work Discipline at the Department of Transportation of Binjai City”. INVEST : Jurnal Inovasi Bisnis Dan Akuntansi, vol. 6, no. 2, Aug. 2025, pp. 369-7, doi:10.55583/invest.v6i2.1517.