Statistical reference book, PR Bulgaria /
Committee for Unified System of Social Information, Bulgarian Chamber of Commerce and Industry.
APA Citation
Bulgaria. T͡Sentralno statistichesko upravlenie., Bŭlgarska tŭrgovsko-promishlena palata., Bulgaria. Komitet po edinna sistema za sot͡sialna informat͡sii͡a. (1990). Statistical reference book, PR Bulgaria. [Sofia]: The Committee.
MLA Citation
Bulgaria. T͡Sentralno statistichesko upravlenie, Bŭlgarska tŭrgovsko-promishlena palata, and Bulgaria. Komitet po edinna sistema za sot͡sialna informat͡sii͡a. Statistical Reference Book, PR Bulgaria. [Sofia]: The Committee, 1990.
Warning: These citations may not always be complete (especially for serials).