- ^ Official data from the censuses of Slovakia:
- Očovský, Štefan (1993). "Vývoj religióznej štruktúry obyvateľstva na Slovensku pri sčítaniach ľudu v rokoch 1900, 1910, 1921, 1930, 1950 a 1991" [Development of the religious structure of the population in Slovakia in the censuses of 1900, 1910, 1921, 1930, 1950 and 1991] (PDF). Geografický časopis. Slovak Academy of Sciences. 45 (2–3). 26 Ocak 2022 tarihinde kaynağından (PDF) arşivlendi.
- "Cirkvi a náboženské spoločnosti – sčítanie 1950, 1991, 2001, 2011" [Churches and religious societies – census 1950, 1991, 2001, 2011] (PDF). Ministry of Culture of the Slovak Republic. 20 Ocak 2022 tarihinde kaynağından (PDF) arşivlendi.
- "Obyvateľstvo SR podľa náboženského vyznania – sčítanie 1991, 2001, 2011" [Population of the Slovak Republic by religion – census 1991, 2001, 2011] (PDF). Statistical Office of the Slovak Republic. 21 Ocak 2022 tarihinde kaynağından (PDF) arşivlendi.
- Takáč, Adam. "Sčítanie obyvateľstva v roku 2021" [Population census of 2021]. Statistical Office of the Slovak Republic. 5 Şubat 2022 tarihinde kaynağından arşivlendi. Erişim tarihi: 6 Temmuz 2022.