APA-viite (7. p.)
Stephenson, P. (2000). Byzantium's Balkan frontier: A political study of the Northern Balkans, 900-1204. Cambridge University Press.
Chicago-viite (17. p.)
Stephenson, Paul. Byzantium's Balkan Frontier: A Political Study of the Northern Balkans, 900-1204. Cambridge ; New York: Cambridge University Press, 2000.
MLA-viite (9. p.)
Stephenson, Paul. Byzantium's Balkan Frontier: A Political Study of the Northern Balkans, 900-1204. Cambridge University Press, 2000.
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