Shintia, D., I. D. Hadistya, and M. Hardika. “The COVID-19 Pandemic and the Movement of the Bisnis-27 Stock Index from January to December 2021”. Research in Accounting Journal (RAJ), vol. 4, no. 2, Aug. 2023, pp. 55-60, doi:10.37385/raj.v3i2.3180.