Utami, Eristy M., et al. “THE STOCK ANALYSIS DURING COVID-19 PANDEMIC: ACTIVE AND PASSIVE STRATEGIES IN FORMING A STOCK PORTFOLIO ON THE INDONESIA STOCK EXCHANGE”. CENTRAL ASIA AND THE CAUCASUS, vol. 23, no. 1, Jan. 2022, pp. 4497-0, https://ca-c.org/CAC/index.php/cac/article/view/443.