Balkanski kulturni i literaturni vrŭzki.

MLA

Rusev, Penʹo and Institut za balkanistika (Bŭlgarska akademii︠a︡ na naukite). Balkanski kulturni i literaturni vrŭzki. [Place of publication not identified] : [publisher not identified], 1974.

APA

Rusev, P. & Institut za balkanistika (Bŭlgarska akademii︠a︡ na naukite). (1974). Balkanski kulturni i literaturni vrŭzki. [Place of publication not identified] : [publisher not identified].

Chicago

Rusev, Penʹo and Institut za balkanistika (Bŭlgarska akademii︠a︡ na naukite). Balkanski kulturni i literaturni vrŭzki. Edited by Penʹo Rusev. [Place of publication not identified] : [publisher not identified], 1974.