“Analysis Of Differences In Share Prices Before And In Covid-19 Pandemic Era(Case Studies In The Sub-Sector Of Telecommunications, Hotel And Tourism, Health, Bumn Finance, And Transportation Listed On The Indonesia Stock Exchange)”, TURCOMAT, vol. 12, no. 11, pp. 1065–1077, May 2021, doi: 10.17762/turcomat.v12i11.5997.