توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

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..

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

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.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

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.