APA (7th ed.) Citation

Library of Congress. (1943). The Balkans: 3, Bulgaria, selected list of reference. [s.n.].

Chicago Style (17th ed.) Citation

Library of Congress. The Balkans: 3, Bulgaria, Selected List of Reference. [Washington]: [s.n.], 1943.

MLA (9th ed.) Citation

Library of Congress. The Balkans: 3, Bulgaria, Selected List of Reference. [s.n.], 1943.