Afrizal Riswandha Akbar, and Suprayitno. “Strengthening Public Expenditure Efficiency Through System Integration: A Case Study of the Official Travel System in Indonesia”. Jati: Jurnal Akuntansi Terapan Indonesia, vol. 8, no. 1, Mar. 2025, pp. 77-92, doi:10.18196/jati.v8i1.25460.