APA (7th ed.) Citation

Institut po zoologii︠a︡ (Bŭlgarska akademii︠a︡ na naukite), editor literario, & Vassilev, I. B. (1978). Fauna na Bulgariia. Bulgarska Akademiia na Naukite.

Chicago Style (17th ed.) Citation

Institut po zoologii︠a︡ (Bŭlgarska akademii︠a︡ na naukite), editor literario, and Ilko Boncev Vassilev. Fauna Na Bulgariia. Sofiia: Bulgarska Akademiia na Naukite, 1978.

MLA (9th ed.) Citation

Institut po zoologii︠a︡ (Bŭlgarska akademii︠a︡ na naukite), editor literario, and Ilko Boncev Vassilev. Fauna Na Bulgariia. Bulgarska Akademiia na Naukite, 1978.