SIBARANI, B. B. UJI BEDA HARGA SAHAM DAN VOLUME PERDAGANGAN PADA MASA SEBELUM DAN SAAT PANDEMIC COVID 19 (EVENT STUDY SAHAM LQ-45, 100 HARI PERDAGANGAN). JURNAL BISNIS DAN AKUNTANSI UNSURYA, [S. l.], v. 8, n. 1, 2023. DOI: 10.35968/jbau.v8i1.1016. Disponível em: https://journal.universitassuryadarma.ac.id/index.php/jbau/article/view/1016. Acesso em: 9 nov. 2025.