Παραπομπή σε μορφή APA (7η εκδ.)

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..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gibbons, 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.

Παραπομπή σε μορφή MLA (8th εκδ.)

Gibbons, 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.