Abdi Asmo, Adol Bastian, and Neng Kamarni. “Ex-Dividend Date: Problematic Abnormal Returns for Sharia Stock Index Companies”. Jurnal Ekonomi Syariah Pelita Bangsa 9, no. 01 (April 22, 2024): 114-126. Accessed May 3, 2026. https://journal.lppmpelitabangsa.id/index.php/jespb/article/view/1198.