R. S. Aryani and R. B. Hendaris, “The Influence of Tax Knowledge, the E-Samsat (Sapa Warga) Payment Program, and the Motor Vehicle Tax Amnesty Program on Motor Vehicle Taxpayer Compliance (Case Study at the PPPD Office of Sukabumi Region I Cibadak)”, DIJEFA, vol. 6, no. 5, pp. 4626–4638, Oct. 2025.