Butar Butar, Ursula. M. R., and Erni Ekawati. “Covid-19 and Firm Performance in Relation to Level of Income and Investment - a Study in Indonesia and Singapore”. Fair Value: Jurnal Ilmiah Akuntansi dan Keuangan 5, no. 5 (December 25, 2022): 2497–2509. Accessed November 23, 2024. https://journal.ikopin.ac.id/index.php/fairvalue/article/view/2753.