Holiviana, Adinda, Loggar Bhilawa, and Harun Harun. “The Analysis Of Abnormal Returns Before And During The Covid-19 Pandemic On Hotel, Restaurant And Tourism Sub-Sector Stocks Listed On Idx”. International Environmental Conferrence on Biosustainability Advancement 1, no. 01 (April 29, 2024): 97–108. Accessed July 19, 2026. https://proceeding.unesa.ac.id/index.php/iecba/article/view/628.