Asnawi, Said Kelana, Giovanni Salim, and Wahid Abdul Malik. “Does Black Monday Appear on The Indonesia Stock Exchange?”. Jurnal Organisasi dan Manajemen 16, no. 1 (June 28, 2020): 24-35. Accessed November 27, 2021. https://jurnal.ut.ac.id/index.php/jom/article/view/780.