Demographics of the Ottoman Empire (English Wikipedia)

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ENGİN DENİZ TANIR. THE MID-NINETEENTH CENTURY OTTOMAN BULGARIA FROM THE VIEWPOINTS OF THE FRENCH TRAVELERS A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF SOCIAL SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY. pp. 52–55. Archived from the original on 2017-02-02. Retrieved 2017-01-30.
ENGİN DENİZ TANIR. THE MID-NINETEENTH CENTURY OTTOMAN BULGARIA FROM THE VIEWPOINTS OF THE FRENCH TRAVELERS A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF SOCIAL SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY. Archived from the original on 2017-02-02. Retrieved 2017-01-30.
ENGİN DENİZ TANIR. THE MID-NINETEENTH CENTURY OTTOMAN BULGARIA FROM THE VIEWPOINTS OF THE FRENCH TRAVELERS A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF SOCIAL SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY. p. 49. Archived from the original on 2017-02-02. Retrieved 2017-01-30.

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KOYUNCU, Aşkın. "Population And Demographics In The Danube Province (1864-1877)". www.turkishstudies.net. Archived from the original on 2018-06-12. Retrieved 2018-06-06.
"Eтнически състав на населението в България. Методологически постановки при установяване на етническия състав" (in Bulgarian). MIRIS - Minority Rights Information System. Archived from the original on 15 July 2018. Retrieved 2 January 2010.
ENGİN DENİZ TANIR. THE MID-NINETEENTH CENTURY OTTOMAN BULGARIA FROM THE VIEWPOINTS OF THE FRENCH TRAVELERS A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF SOCIAL SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY. pp. 52–55. Archived from the original on 2017-02-02. Retrieved 2017-01-30.
ENGİN DENİZ TANIR. THE MID-NINETEENTH CENTURY OTTOMAN BULGARIA FROM THE VIEWPOINTS OF THE FRENCH TRAVELERS A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF SOCIAL SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY. Archived from the original on 2017-02-02. Retrieved 2017-01-30.
"The Geography Of Edirne Province In 19th Century" (PDF). Archived from the original (PDF) on 2016-03-05. Retrieved 2017-01-25.
ENGİN DENİZ TANIR. THE MID-NINETEENTH CENTURY OTTOMAN BULGARIA FROM THE VIEWPOINTS OF THE FRENCH TRAVELERS A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF SOCIAL SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY. p. 49. Archived from the original on 2017-02-02. Retrieved 2017-01-30.