Gibbons, J. (1920). Pastoral letter of the archbishops and bishops of the United States assembled in conference at the Catholic University of America, September, 1919. Washington, D. C..
Chicago Style (17. basım) AtıfGibbons, James. Pastoral Letter of the Archbishops and Bishops of the United States Assembled in Conference at the Catholic University of America, September, 1919. Washington, D. C., 1920.
MLA (8th ed.) AtıfGibbons, James. Pastoral Letter of the Archbishops and Bishops of the United States Assembled in Conference at the Catholic University of America, September, 1919. Washington, D. C., 1920.
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