Assyamsi, Alghifari, et al. “Determination of Stock Option Prices Using the Black Scholes Method On Stocks Listed On the Jakarta Islamic Index for The Period 2021 - 2022”. Journal of Social Transformation and Regional Development, vol. 5, no. 1, Aug. 2023, pp. 66-72, https://publisher.uthm.edu.my/ojs/index.php/jstard/article/view/14902.