Jufri, Achmad, Masriani Adhillah, and Abdul Qoyum. “Asymmetric Spillover Effect of The United States and China Islamic Index on ASEAN Islamic Index During The Covid-19 Pandemic”. Jurnal Ekonomi Syariah Teori dan Terapan 9, no. 3 (May 31, 2022): 286–298. Accessed September 15, 2024. https://e-journal.unair.ac.id/JESTT/article/view/32253.