BAKTYARINA, N. L. P. I.; PURNAMAWATI, I. G. A. Analisis Komparatif Abnormal Return, Trading Volume Activity dan Bid Ask Spread Terhadap Pelantikan Menteri BUMN Erick Thohir Pada IDX BUMN20. Ekuitas: Jurnal Pendidikan Ekonomi, [S. l.], v. 8, n. 2, p. 196–202, 2020. DOI: 10.23887/ekuitas.v8i2.26890. Disponível em: https://ejournal.undiksha.ac.id/index.php/EKU/article/view/26890. Acesso em: 8 feb. 2025.