SINTA SINTIA BR. KARO; PANI AKHIRUDDIN SIREGAR; AHMAD AFANDI SURBAKTI. Determination of Internal and External Factors in Sharia Investment Management Optimization. Al Urwah : Sharia Economics Journal, [S. l.], v. 3, n. 1, p. 66–71, 2026. DOI: 10.61536/alurwah.v3i1.358. Disponível em: https://journal.takaza.id/index.php/alurwah/article/view/358. Acesso em: 18 mar. 2026.