APA (7th ed.) Citation

International Congress of Slavists Sofia. (1963). American contributions to the Fifth International Congress of Slavists: Sofia, September 1963. Mouton.

Chicago Style (17th ed.) Citation

International Congress of Slavists Sofia. American Contributions to the Fifth International Congress of Slavists: Sofia, September 1963. The Hague: Mouton, 1963.

MLA (9th ed.) Citation

International Congress of Slavists Sofia. American Contributions to the Fifth International Congress of Slavists: Sofia, September 1963. Mouton, 1963.