Sinta Sintia Br. Karo, Pani Akhiruddin Siregar, Ahmad Afandi Surbakti. Determination of Internal and External Factors in Sharia Investment Management Optimization. Al Urwah [Internet]. 2026 Jan. 10 [cited 2026 Jan. 15];3(1):66-71. Available from: https://journal.takaza.id/index.php/alurwah/article/view/358