Jufri, A., M. Adhillah, and A. 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, vol. 9, no. 3, May 2022, pp. 286-98, doi:10.20473/vol9iss20223pp286-298.