Aisya, Siti. “Legal Certainty and Effectiveness of Tax Supervision for Foreign Citizens and Foreign Legal Entities Earning Income in Indonesia in the Perspective of International Tax Law”. Al-Kharaj: Journal of Islamic Economic and Business 8, no. 2 (June 23, 2026). Accessed June 23, 2026. https://ejournal.iainpalopo.ac.id/index.php/alkharaj/article/view/11224.