APA (7th ed.) Citation

Bulgarien. (1987). Constitution of the People's Republic of Bulgaria: Adopted by a National Referendum on May 16, 1971. Sofia Press.

Chicago Style (17th ed.) Citation

Bulgarien. Constitution of the People's Republic of Bulgaria: Adopted by a National Referendum on May 16, 1971. Sofia: Sofia Press, 1987.

MLA (9th ed.) Citation

Bulgarien. Constitution of the People's Republic of Bulgaria: Adopted by a National Referendum on May 16, 1971. Sofia Press, 1987.

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