Catholic Church. Secretariatus ad Christianorum Unitatem Fovendam & United States Catholic Conference. (1967). Directory for the application of the decisions of the Second Ecumenical Council of the Vatican concerning ecumenical matters. United States Catholic Conference.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Catholic Church. Secretariatus ad Christianorum Unitatem Fovendam và United States Catholic Conference. Directory for the Application of the Decisions of the Second Ecumenical Council of the Vatican Concerning Ecumenical Matters. [Washington, D.C.]: United States Catholic Conference, 1967.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Catholic Church. Secretariatus ad Christianorum Unitatem Fovendam và United States Catholic Conference. Directory for the Application of the Decisions of the Second Ecumenical Council of the Vatican Concerning Ecumenical Matters. United States Catholic Conference, 1967.