Celik, Mehmet (2020). «Religious Conversion in Early Post‐Ottoman Bulgaria: A Case Study of Ruse». Journal of Religious History44 (1): 103-124. ISSN0022-4227. doi:10.1111/1467-9809.12641.
Mitchell, Ryan Robert (2011). «Anarchism, Bulgaria». En Ness, Immanuel, ed. The International Encyclopedia of Revolution and Protest. John Wiley & Sons, Ltd. pp. 1-3. ISBN978-1-4051-9807-3. doi:10.1002/9781405198073.wbierp1752.
Celik, Mehmet (2020). «Religious Conversion in Early Post‐Ottoman Bulgaria: A Case Study of Ruse». Journal of Religious History44 (1): 103-124. ISSN0022-4227. doi:10.1111/1467-9809.12641.