„Z Score Comparative Analysis of Tourism, Restaurant and Hotel Sub-Sector Companies Listed on The Indonesia Stock Exchange Before and After The Implementation of The Covid-19 Vaccine Policytittle ”. INVEST : Jurnal Inovasi Bisnis dan Akuntansi 4, no. 1 (aprilie 8, 2023): 101–109. Data accesării iulie 30, 2026. https://journal.al-matani.com/index.php/invest/article/view/440.