John XXIII, P. (1959). A letter from His Holiness, Pope John XXIII. Servants of the Holy Paraclete.
Lua i Stíl Chicago (17ú heag.)John XXIII, Pope. A Letter from His Holiness, Pope John XXIII. Randolph, Vt.: Servants of the Holy Paraclete, 1959.
Lua MLA (8ú heag.)John XXIII, Pope. A Letter from His Holiness, Pope John XXIII. Servants of the Holy Paraclete, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.