Estiyani, N. W., E. Hendrawaty, and N. P. Dalimunthe. “The Impact of Stock Price, Trading Volume, Returns, and Return Volatility on the Bid-Ask Spread: Study of Companies Undergoing Stock Splits”. Asian Journal of Economics and Business Management, vol. 3, no. 2, July 2024, pp. 566-72, doi:10.53402/ajebm.v3i2.439.