Bŭlgarska akademi︠i︡a na naukite. ︠T︡Sentŭr za nauchna informa︠t︡si︠i︡a & Polikarov, A. P. (1976). Problemi na nauchnata informatsi︠i︡a: Sb. statii. BAN.
Chicago Style (17th ed.) CitationBŭlgarska akademi︠i︡a na naukite. ︠T︡Sentŭr za nauchna informa︠t︡si︠i︡a and Azar︠i︡a Prizenti Polikarov. Problemi Na Nauchnata Informatsi︠i︡a: Sb. Statii. Sofi︠i︡a: BAN, 1976.
MLA (8th ed.) CitationBŭlgarska akademi︠i︡a na naukite. ︠T︡Sentŭr za nauchna informa︠t︡si︠i︡a and Azar︠i︡a Prizenti Polikarov. Problemi Na Nauchnata Informatsi︠i︡a: Sb. Statii. BAN, 1976.
Warning: These citations may not always be 100% accurate.