Cita APA (7a ed.)

DAY. (1968). Day of Peace 1968. Typis polyglottis Vaticanis.

Cita Chicago Style (17a ed.)

DAY. Day of Peace 1968. Citta del Vaticano: Typis polyglottis Vaticanis, 1968.

Cita MLA (9a ed.)

DAY. Day of Peace 1968. Typis polyglottis Vaticanis, 1968.