Sinta Sintia Br. Karo, Pani Akhiruddin Siregar and Ahmad Afandi Surbakti (2026) “Determination of Internal and External Factors in Sharia Investment Management Optimization”, Al Urwah : Sharia Economics Journal, 3(1), pp. 66–71. doi: 10.61536/alurwah.v3i1.358.