APA (7e ed.) Bronvermelding

John Paul II, P. (1999). Letter of His Holiness Pope John Paul II to the elderly. United States Catholic Conference.

Chicago (17e ed.) Bronvermelding

John Paul II, Pope. Letter of His Holiness Pope John Paul II to the Elderly. Washington, D.C.: United States Catholic Conference, 1999.

MLA (8e ed.) Bronvermelding

John Paul II, Pope. Letter of His Holiness Pope John Paul II to the Elderly. United States Catholic Conference, 1999.