Kazmi, Syed Mumtaz Ali, Altaf Hussain, Rehan Tahir, and Samiullah. “Systematic Risk in Energy Sector: Evidence from Pakistan Stock Exchange”. Pakistan Journal of Humanities and Social Sciences 11, no. 4 (December 17, 2023): 4421–4426. Accessed December 24, 2024. https://internationalrasd.org/journals/index.php/pjhss/article/view/1871.