APA

Paulus PP, . (1972). Message of his holiness pope Paul VI for the celebration of the "Day of peace", January Ist, 1972. [Civitas Vaticana]: Typis Polyglottis Vaticanis.

Chicago

Paulus PP, . 1972. Message of his holiness pope Paul VI for the celebration of the "Day of peace", January Ist, 1972. [Civitas Vaticana]: Typis Polyglottis Vaticanis.

Harvard

Paulus PP, . (1972). Message of his holiness pope Paul VI for the celebration of the "Day of peace", January Ist, 1972. [Civitas Vaticana]: Typis Polyglottis Vaticanis.

MLA

Paulus PP, . Message of his holiness pope Paul VI for the celebration of the "Day of peace", January Ist, 1972. [Civitas Vaticana]: Typis Polyglottis Vaticanis. 1972.