Catholic Church. Secretariatus ad Christianorum Unitatem Fovendam. (1968). Notes on the application of the ecumenical directory. U.S. Catholic Conference.
Chicago-referens (17:e uppl.)Catholic Church. Secretariatus ad Christianorum Unitatem Fovendam. Notes on the Application of the Ecumenical Directory. Washington: U.S. Catholic Conference, 1968.
MLA-referens (8:e uppl.)Catholic Church. Secretariatus ad Christianorum Unitatem Fovendam. Notes on the Application of the Ecumenical Directory. U.S. Catholic Conference, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.