(1981). [Petrov, Valeri [bulg. Schriftst., 1920- ]].
Chicago Style (17th ed.) Citation[Petrov, Valeri [bulg. Schriftst., 1920- ]]. 1981.
MLA (9th ed.) Citation[Petrov, Valeri [bulg. Schriftst., 1920- ]]. 1981.
Warning: These citations may not always be 100% accurate.