Forbes, N., & Mitrany, D. (1915). The Balkans : a history of Bulgaria, Serbia, Greece, Rumania and Turkey / Nevill Forbes ... [et al.]: A history of Bulgaria, Serbia, Greece, Rumania and Turkey. Clarendon.
Chicago Style (17th ed.) CitationForbes, Nevill, and David Mitrany. The Balkans : A History of Bulgaria, Serbia, Greece, Rumania and Turkey / Nevill Forbes ... [et Al.]: A History of Bulgaria, Serbia, Greece, Rumania and Turkey. Oxford: Clarendon, 1915.
MLA (9th ed.) CitationForbes, Nevill, and David Mitrany. The Balkans : A History of Bulgaria, Serbia, Greece, Rumania and Turkey / Nevill Forbes ... [et Al.]: A History of Bulgaria, Serbia, Greece, Rumania and Turkey. Clarendon, 1915.
Warning: These citations may not always be 100% accurate.