purnama, marselia purnama, Vivin Hanitha, and Hendra Hendra. “Effect of Gold Price, Nickel Price, Used Exchange, Dow Jones Industrial Average, and FTSE Malaysia KLCI on Sharia Share Price Index (Sharia Ida) on The Indonesia Stock Exchange in the Period of January 2020 - December 2020”. eCo-Buss 4, no. 1 (August 25, 2021): 29–45. Accessed March 29, 2024. https://jurnal.kdi.or.id/index.php/eb/article/view/211.