APA (7th ed.) Citation

Petrov, I. (1962). Economic and state structure of the People'Republic of Bulgaria. Foreign languages press.

Chicago Style (17th ed.) Citation

Petrov, Ivan. Economic and State Structure of the People'Republic of Bulgaria. Sofia: Foreign languages press, 1962.

MLA (9th ed.) Citation

Petrov, Ivan. Economic and State Structure of the People'Republic of Bulgaria. Foreign languages press, 1962.

Warning: These citations may not always be 100% accurate.