Mukhsin, Muhammad, Hari Sukarno, and Hadi Paramui. “Stock Price Volatility: An Efficiency Test of The Indonesian Stock Exchange In Semi-Strong Form”. Wiga : Jurnal Penelitian Ilmu Ekonomi 14, no. 2 (September 13, 2024): 322–332. Accessed April 23, 2025. https://ejournal.itbwigalumajang.ac.id/index.php/wiga/article/view/1307.