Dobrev, P. (1996). Universum Protobulgaricum: Inscriptions and alphabet of the Proto Bulgarians (1. English ed.). Ed. MOSAIC.
Chicago Style (17th ed.) CitationDobrev, Petăr. Universum Protobulgaricum: Inscriptions and Alphabet of the Proto Bulgarians. 1. English ed. Dublin [u.a.]: Ed. MOSAIC, 1996.
MLA (9th ed.) CitationDobrev, Petăr. Universum Protobulgaricum: Inscriptions and Alphabet of the Proto Bulgarians. 1. English ed. Ed. MOSAIC, 1996.
Warning: These citations may not always be 100% accurate.