NURWIKA, T. .; NI’AM, Z. B. . Analisis Perbandingan Return, Abnormal Return Dan Volume Perdagangan Saham Sebelum Dan Sesudah Peristiwa January Effect Pada Perusahaan Di Indeks Idx 30 Periode 2020-2021. Economics and Digital Business Review, [S. l.], v. 4, n. 2, p. 1–10, 2023. DOI: 10.37531/ecotal.v4i2.451. Disponível em: https://ojs.stieamkop.ac.id/index.php/ecotal/article/view/451. Acesso em: 12 jul. 2025.