Pope Clement VIII (1753) [promulgated 1595-12-23]. "Unio Nationis Ruthenae cum Ecclesia Romana". In Cocquelines, Charles (ed.). Bullarum diplomatum et privilegiorum sanctorum Romanorum pontificum (in Latin). Vol. T.5 pt.2. Rome: Hieronymi Mainardi. pp. 87–92. OCLC754549972.
Baran, Alexander (2000). "Reviewed work: Crisis and Reform: The Kyivan Metropolitanate, the Patriarchate of Constantinople, and the Genesis of the Union of Brest, Borys A. Gudziak". Slavic Review. 59 (2): 449–450. doi:10.2307/2697078. JSTOR2697078.
Longworth, Philip (2000). "Reviewed work: Crisis and Reform: The Kyivan Metropolitanate, the Patriarch of Constantinople, and the Genesis of the Union of Brest, Borys A. Gudziak". The Slavonic and East European Review. 78 (1): 166–168. JSTOR4213031.
Baran, Alexander (2000). "Reviewed work: Crisis and Reform: The Kyivan Metropolitanate, the Patriarchate of Constantinople, and the Genesis of the Union of Brest, Borys A. Gudziak". Slavic Review. 59 (2): 449–450. doi:10.2307/2697078. JSTOR2697078.
wikisource.org
en.wikisource.org
This article incorporates text from a publication now in the public domain: Palmieri, Aurelio (1912). "Union of Brest". In Herbermann, Charles (ed.). Catholic Encyclopedia. Vol. 15. New York: Robert Appleton Company.
worldcat.org
Pope Clement VIII (1753) [promulgated 1595-12-23]. "Unio Nationis Ruthenae cum Ecclesia Romana". In Cocquelines, Charles (ed.). Bullarum diplomatum et privilegiorum sanctorum Romanorum pontificum (in Latin). Vol. T.5 pt.2. Rome: Hieronymi Mainardi. pp. 87–92. OCLC754549972.