- Researches on the Danube and the Adriatic: Or, Contributions to the Modern History of Hungary and Transylvania, Dalmatia and Croatia, Servia and Bulgaria. Volume 1 by Andrew Archibald Paton, 2002-04-12
- Bulgaria, 13 centuries of existence by Vassil Atanasov Vassilev, 1979
- Bulgaria in American Perspective by Marin Pundeff, 1994-10-15
- Culture and History of the Bulgarian People: Their Bulgarian and American Parallels. Ed by Walter W. Kolar. Based on a Symposium Held at Duquesne Univ by Kolar, 1982-09
- Recent Social Trends in Bulgaria 1960-1995 (Comparative Charting of Social Change)
- Turkish and Other Muslim Minorities in Bulgaria (Institute of Muslim Minority Affairs (IMMA) Book) by Ali Eminov, 1997-08-12
- The United States and Bulgaria in World War I by Petko M. Petkov, 1991-09-15
- A history of the first Bulgarian empire, by Steven Runciman, 1930
- Bulgaria and her Jews: The history of a dubious symbiosis by Vicki Tamir, 1979
- Uniforms & Equipment of the Central Powers in World War I: Austria-hungary & Bulgaria by Spencer A. Coil, 2007-09-15
- The History of Bulgaria (The Greenwood Histories of the Modern Nations) by Frederick B. Chary, 2011-02-15
- Bulgaria: Illustrated history by Bozhidar Dimitrov, 1994
- The Balkans: A History of Bulgaria, Serbia, Greece, Rumania, Turkey (Classic Reprint) by Nevill Forbes, 2010-06-09
- Bulgaria: Geography of Bulgaria, History of Bulgaria, History of early Ottoman Bulgaria, National awakening of Bulgaria, First Balkan War, Second Balkan War, Bulgaria during World War I
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