Alkusani, Alkusani, Anita Handayani, and Yosi Firda Rahmadani. “Linkage Stock Price, Trading Volume Activity, Stock Returns and Trading Frequency on Bid Ask Spread”. INNOVATION RESEARCH JOURNAL 1, no. 1 (February 7, 2020): 28–33. Accessed May 31, 2025. https://journal.umg.ac.id/index.php/innovation/article/view/1189.