HALIM, HARLIANA; YUSOFF, KAMARUZAMAN; AHMAD, SHAKILA; ABDUL KHIR, MOHD FAIZAL; ABDULLAH, ABDUL HAFIZ; BASIR, AMINUDDIN; SYED ABU BAKAR, SYARIFAH KHADIJAH. SUMBER-SUMBER KAJIAN TERHADAP KEWUJUDAN NEGARA ISLAM VOLGA BULGARIA 922 MASEHI. Human Sustainability Procedia, [S. l.], 2018. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/hsp/article/view/1186.. Acesso em: 2 may. 2024.