698 (DCXCVIII) var ett vanligt år som började en tisdag i den julianska kalendern.
- ^ Venning, Timothy, red (2006). A Chronology of the Byzantine Empire. Palgrave Macmillan. sid. 187. ISBN 1-4039-1774-4
- ^ Treadgold, Warren T. (1997), A History of the Byzantine State and Society, Stanford, CA: Stanford University Press, s. 337–339, ISBN 0-8047-2630-2, http://books.google.com/books?id=nYbnr5XVbzUC
- ^ Venning, Timothy, red (2006). A Chronology of the Byzantine Empire. Palgrave Macmillan. sid. 188. ISBN 1-4039-1774-4
- ^ Treadgold, Warren T. (1997), A History of the Byzantine State and Society, Stanford, CA: Stanford University Press, s. 339, ISBN 0-8047-2630-2, http://books.google.com/books?id=nYbnr5XVbzUC