“PENDEKATAN OPERASI UNION SETS MELALUI PRINSIP INKLUSI EKSKLUSI UNTUK OPTIMALISASI PORTOFOLIO KEUANGAN SYARIAH” (2026) Journal of Islamic Economics and Business Review (JIEBR), 2(1), pp. 75–82. Available at: https://ejournal.unisi.ac.id/index.php/JIEBR/article/view/5322 (Accessed: 14 June 2026).