GRIG, Lucy. - KELLY, Gavin. Two Romes [elektronický zdroj]. Oxford ; New York : Oxford University Press, c2012. 1 online zdroj (482 s.). Oxford studies in late antiquity. Available on Internet: <http://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=441115> ISBN 9780199921188.