Halim H, Yusoff K, Ahmad S, Faizal Abdul Khir M, Hafiz Abdullah A, Hamzah S, et al. Analysis on Social Change among Bulghar Society Based on Risalah Ibn Fadlan 922 AD. IJET [Internet]. 2018 Aug. 14 [cited 2026 Feb. 12];7(3.25):501-4. Available from: https://www.sciencepubco.com/index.php/IJET/article/view/17739