Abdullah Emad Ibrahim, Sazali Abd Wahab, and Ida Md Yasin. “The Evolution of Heis Sustainability Model – A Contemporary Approach”. Kurdish Studies 11, no. 2 (December 8, 2023): 5303–5312. Accessed October 14, 2024. https://kurdishstudies.net/menu-script/index.php/KS/article/view/1122.