APA

Iohannes PP, . (1959). Encyclical letter of His Holiness John XXIII by Divine Providence Pope to our venerable brethren the Patriarchs, Primates, Archbishops, Bishops ... and to all the clergy and faithful of the Catholic World. [Città del Vaticano]: Tipografia Poliglotta Vaticana.

Chicago

Iohannes PP, . 1959. Encyclical letter of His Holiness John XXIII by Divine Providence Pope to our venerable brethren the Patriarchs, Primates, Archbishops, Bishops ... and to all the clergy and faithful of the Catholic World. [Città del Vaticano]: Tipografia Poliglotta Vaticana.

Harvard

Iohannes PP, . (1959). Encyclical letter of His Holiness John XXIII by Divine Providence Pope to our venerable brethren the Patriarchs, Primates, Archbishops, Bishops ... and to all the clergy and faithful of the Catholic World. [Città del Vaticano]: Tipografia Poliglotta Vaticana.

MLA

Iohannes PP, . Encyclical letter of His Holiness John XXIII by Divine Providence Pope to our venerable brethren the Patriarchs, Primates, Archbishops, Bishops ... and to all the clergy and faithful of the Catholic World. [Città del Vaticano]: Tipografia Poliglotta Vaticana. 1959.