Iswadi, Tony, Tuffahati Septia Nada, Riandy Mardhika Adif, and Welhendra. “Pengujian Monday Effect Dan Weekend Effect Terhadap Return Saham Perusahaan Di Jakarta Islamic Indeks (JII) Periode Sebelum Dan Sesudah Covid - 19”. Jurnal Informatika Ekonomi Bisnis 4, no. 4 (December 31, 2022): 239-243. Accessed December 4, 2025. https://www.infeb.org/index.php/infeb/article/view/182.