NENENGSUSANTI; MUHAMMAD RIDHWAN; SAKINAICHSANI; MOHAMMAD NUGRAHA. COMPARATIVE ANALYSIS OF AVERAGE ABNORMAL RETURN, AVERAGE TRADING VOLUME ACTIVITY AND AVERAGE BID-ASK SPREAD BEFORE AND AFTER COVID-19 ANNOUNCEMENT IN INDONESIA (EVENT STUDY ON IDXHIDIV20 INDEX). PalArch’s Journal of Archaeology of Egypt / Egyptology, [S. l.], v. 17, n. 10, p. 2946-2959, 2021. Disponível em: https://archives.palarch.nl/index.php/jae/article/view/5430. Acesso em: 2 may. 2024.