Belov, S. G., & Chamidullin, B. L. (2022). Volžskie bulgary. Putʹ k islamu: ėtnologičeskaja i kulʹturno-konfessionalʹnaja istorija prabolgar s drevnejšich vremen do oficialʹnogo prinjatija bulgarami islama = Volga Bulgars. The road to islam : ethno-political, cultural and religious history of the Proto-Bulgarians from ancient times to the official adoption of islam by the Bulgars. Institut Tatarskoj ėnciklopedii i regionovedenija Akademii nauk Respubliki Tatarstan.
Chicago-Zitierstil (17. Ausg.)Belov, Sergej Gennadʹevič, und Bulat Lironovič Chamidullin. Volžskie Bulgary. Putʹ K Islamu: ėtnologičeskaja I Kulʹturno-konfessionalʹnaja Istorija Prabolgar S Drevnejšich Vremen Do Oficialʹnogo Prinjatija Bulgarami Islama = Volga Bulgars. The Road to Islam : Ethno-political, Cultural and Religious History of the Proto-Bulgarians from Ancient Times to the Official Adoption of Islam by the Bulgars. Kazanʹ: Institut Tatarskoj ėnciklopedii i regionovedenija Akademii nauk Respubliki Tatarstan, 2022.
MLA-Zitierstil (9. Ausg.)Belov, Sergej Gennadʹevič, und Bulat Lironovič Chamidullin. Volžskie Bulgary. Putʹ K Islamu: ėtnologičeskaja I Kulʹturno-konfessionalʹnaja Istorija Prabolgar S Drevnejšich Vremen Do Oficialʹnogo Prinjatija Bulgarami Islama = Volga Bulgars. The Road to Islam : Ethno-political, Cultural and Religious History of the Proto-Bulgarians from Ancient Times to the Official Adoption of Islam by the Bulgars. Institut Tatarskoj ėnciklopedii i regionovedenija Akademii nauk Respubliki Tatarstan, 2022.