Litavrin, G. G. (1987). Kratka︠i︡a istori︠i︡a Bolgarii: S drevneĭshikh vremen do nashikh dneĭ. "Nauka".
Chicago Style (17th ed.) CitationLitavrin, G. G. Kratka︠i︡a Istori︠i︡a Bolgarii: S Drevneĭshikh Vremen Do Nashikh Dneĭ. Moskva: "Nauka", 1987.
MLA (8th ed.) CitationLitavrin, G. G. Kratka︠i︡a Istori︠i︡a Bolgarii: S Drevneĭshikh Vremen Do Nashikh Dneĭ. "Nauka", 1987.
Warning: These citations may not always be 100% accurate.