Manrejo, Sumarno, and Ajeng Kirana Larasati. “Optimizing Corporate Tax Efficiency Through Article 21 Tax Planning under Indonesia’s Tax Harmonization Law”. Jurnal Ilmiah Akuntansi Kesatuan 13, no. 3 (June 16, 2025): 439–450. Accessed June 15, 2026. https://jurnal.ibik.ac.id/index.php/jiakes/article/view/3474.