Widjiantoro, Surya Tegar. “Pengaruh Harga Komoditas Pertambangan Dunia Terhadap Indeks Saham Syariah Indonesia”. Jurnal Ilmiah Ekonomi Islam 9, no. 3 (November 11, 2023): 3324–3330. Accessed July 1, 2025. https://jurnal.stie-aas.ac.id/index.php/jei/article/view/10550.