APA
Balcanicus, .The Bulgars and their neighbours(historical review). Jerusalem: S.Rohald's Press.
Chicago
Balcanicus, .The Bulgars and their neighbours(historical review). Jerusalem: S.Rohald's Press.
Harvard
Balcanicus, .The Bulgars and their neighbours(historical review). Jerusalem: S.Rohald's Press.
MLA
Balcanicus, .Jerusalem: S.Rohald's Press. .