Jajan Badruzaman (2019) “Analysis of Comparison of Stock Prices before and after Announcement of Business-27 INDKS (Census on Companies in the Category of Business Index 27 in 2018)”, Global Journal of Human-Social Science, 19(E5), pp. 35–38. Available at: https://socialscienceresearch.org/index.php/GJHSS/article/view/2905 (Accessed: 5 May 2024).