APA

Pontificium Consilium de communicationibus socialibus, Concilium Vaticanum, . (1971). Pastoral instruction "Communio et progressio" on the means of social communication. [Vatican City]: Vatican Printing Press.

Chicago

Pontificium Consilium de communicationibus socialibus, Concilium Vaticanum, . 1971. Pastoral instruction "Communio et progressio" on the means of social communication. [Vatican City]: Vatican Printing Press.

Harvard

Pontificium Consilium de communicationibus socialibus, Concilium Vaticanum, . (1971). Pastoral instruction "Communio et progressio" on the means of social communication. [Vatican City]: Vatican Printing Press.

MLA

Pontificium Consilium de communicationibus socialibus, Concilium Vaticanum, . Pastoral instruction "Communio et progressio" on the means of social communication. [Vatican City]: Vatican Printing Press. 1971.