Drevnjaja i srednevekovaja istorija udmurtskogo naroda - Goldina, Rimma Dmitrievna 1941- (Izdat. Dom "Udmurtskij Univ.", 2004)
In kyrill. Schr., russ. - Zsfassung in engl. Sprache u.d.T.: Ancient and middled-aged history of the udmurt people