APA (7th ed.) Citation

Sloane, W. M. (1920). The Balkans: A laboratory of history (Rev. and enlarged.). Abingdon Pr.

Chicago Style (17th ed.) Citation

Sloane, William Milligan. The Balkans: A Laboratory of History. Rev. and enlarged. New York, Cincinnati: Abingdon Pr, 1920.

MLA (9th ed.) Citation

Sloane, William Milligan. The Balkans: A Laboratory of History. Rev. and enlarged. Abingdon Pr, 1920.