^Squitieri, Andrea, author. (2018-02-15). Revolutionizing a World : From Small States to Universalism in the Pre-Islamic near East. UCL Press. hlm. 171. ISBN9781911576648. OCLC1050964552.Pemeliharaan CS1: Banyak nama: authors list (link)
Referensi
Brøndsted, Johannes (1965). The Vikings. (transl. by Kalle Skov). Penguin Books.
Golden, P.B. (2006) "Rus." Encyclopaedia of Islam (Brill Online). Eds.: P. Bearman, Th. Bianquis, C.E. Bosworth, E. van Donzel and W.P. Heinrichs. Brill.
Logan, Donald F. (1992). The Vikings in History 2nd ed. Routledge. ISBN0-415-08396-6
Noonan, Thomas Schaub (1987–1991). "When Did Rus/Rus' Merchants First Visit Khazaria and Baghdad?" Archivum Eurasiae Medii Aevi 7, pp. 213–219.