APA
[John Paul II P., . (2004). Message of His Holiness Pope John Paul II for the celebration of the World day of peace, 1 January 2004. Vatican City: Libreria Editrice Vaticana.
Chicago
[John Paul II Pope], . 2004. Message of His Holiness Pope John Paul II for the celebration of the World day of peace, 1 January 2004. Vatican City: Libreria Editrice Vaticana.
Harvard
[John Paul II P., . (2004). Message of His Holiness Pope John Paul II for the celebration of the World day of peace, 1 January 2004. Vatican City: Libreria Editrice Vaticana.
MLA
[John Paul II Pope], . Message of His Holiness Pope John Paul II for the celebration of the World day of peace, 1 January 2004. Vatican City: Libreria Editrice Vaticana. 2004.
