Bŭlgarskite khanove i t͡s︡are: Ot khan Kubrat do t͡s︡ar Boris III: istoricheski spravochnik (Bulgarian Edition)
by
Ĭordan Andreev
details (
United States
).
ISBN: 978-954-427-216-6
ISBN-10: 954-427-216-X
Izd-vo "Abagar"
· 1996