Arman, Agus, and Yuyun Karystin Meilisa Suade. “Analysis of the Sectoral Stock Price Index on the IDX During the Covid-19”. Jurnal Minds: Manajemen Ide Dan Inspirasi, vol. 9, no. 1, May 2022, pp. 79-90, doi:10.24252/minds.v9i1.25451.