Syawaluddin A, Akbardin M, Sapta Aji AS. IMPLEMENTATION OF THE SELF-ASSESSMENT SYSTEM FOR ARTICLE 21 OF THE HARMONIZED UUD INCOME TAX AT THE WIN PARTNERS TAX CONSULTANT OFFICE, MAKASSAR BRANCH. LAJONGA [Internet]. 2025 Nov. 11 [cited 2026 Oct. 1];2(1):24-3. Available from: https://journal.lajagoe.com/index.php/lajonga/article/view/159