Ningsih NW, Pramasha RR, Kurniawan A, Audia N. A Comparison of the Financial Performance of Telecommunication Companies Listed on the Jakarta Islamic Index Before and Amidst the Covid-19 Pandemic. KSS [Internet]. 2024 May 17 [cited 2025 Oct. 12];9(16):181–188. Available from: https://knepublishing.com/index.php/KnE-Social/article/view/16244