APA (7th ed.) Citation

Khristov, K. A., & Kosev, D. K. (1963). A short history of Bulgaria. Foreign Languages Press.

Chicago Style (17th ed.) Citation

Khristov, Khristo Angelov, and Dimitŭr Konstantinov Kosev. A Short History of Bulgaria. Sofia: Foreign Languages Press, 1963.

MLA (9th ed.) Citation

Khristov, Khristo Angelov, and Dimitŭr Konstantinov Kosev. A Short History of Bulgaria. Foreign Languages Press, 1963.