Ervina, N., K. Azwar, E. Susanti, and C. Dewi Nainggolan. “Effect Of Inflation, Exchange Rates, And Trading Volume Activity On Stock Price Indices During The Covid-19 Pandemic On Companies In The Basic Industry And Chemical Sectors”. International Journal of Science, Technology & Management, Vol. 3, no. 6, Nov. 2022, pp. 1650-8, doi:10.46729/ijstm.v3i6.693.