• Goodwin, Jason - Lords of the Horizons (book)
• Géza Dávid, Pál Fodor, Ransom slavery along the Ottoman borders: early fifteenth-early eighteenth centuries, BRILL, 2007. ISBN 90-04-15704-2.
• Jean W. Sedlar, East Central Europe in the Middle Ages, 1000-1500, University of Washington Press, 1994. ISBN 0-295-97290-4.

- * Gábor Ágoston, Bruce Alan Masters, Encyclopedia of the Ottoman Empire, Infobase Publishing, 2009. ISBN 0-8160-6259-5.

• Stephen Turnbull, The Ottoman Empire, 1326-1699, Osprey Publishing, 2003. ISBN 1-84176-569-4.
• Jim Bradbury, Routledge Companion to Medieval Warfare, Routledge, 2004. ISBN 0-203-64466-2.
• Baron Patrick Balfour Kinross, The Ottoman centuries: the rise and fall of the Turkish Empire, Cape, 1977. ISBN 0-224-01379-3.
• Stoyan Pribichevich, World without end: the saga of southeastern Europe, Reynal & Hitchcock, 1939.
• Stoyan Pribichevich, Living space, the story of south-eastern Europe, William Heinemann, ltd., 1940.
• Lucian Boia, History and myth in Romanian consciousness, Central European University Press, 2001. ISBN 963-9116-97-1.