APA (7th ed.) Citation

George A. (1990). Piatra neagra. Bucuresti.

Chicago Style (17th ed.) Citation

George A. Piatra Neagra. Editura stiintifica: Bucuresti, 1990.

MLA (8th ed.) Citation

George A. Piatra Neagra. Bucuresti, 1990.

Warning: These citations may not always be 100% accurate.