APA

Gudziak B., . (2001). Crisis and Reform. The Kyivan Metropolitanate, the Patriarchate of Constantinople, and the Genesis of the Union of Brest. Cambridge: Harvard Ukrainian Rescarch Institute.

Chicago

Gudziak B.A, . 2001. Crisis and Reform. The Kyivan Metropolitanate, the Patriarchate of Constantinople, and the Genesis of the Union of Brest. Cambridge: Harvard Ukrainian Rescarch Institute.

Harvard

Gudziak B., . (2001). Crisis and Reform. The Kyivan Metropolitanate, the Patriarchate of Constantinople, and the Genesis of the Union of Brest. Cambridge: Harvard Ukrainian Rescarch Institute.

MLA

Gudziak B.A, . Crisis and Reform. The Kyivan Metropolitanate, the Patriarchate of Constantinople, and the Genesis of the Union of Brest. Cambridge: Harvard Ukrainian Rescarch Institute. 2001.