APA
John Paul II P., . (1999). Letter of His Holiness Pope John Paul II to the elderly. Vatican: .
Chicago
John Paul II Pope, . 1999. Letter of His Holiness Pope John Paul II to the elderly. Vatican: .
Harvard
John Paul II P., . (1999). Letter of His Holiness Pope John Paul II to the elderly. Vatican: .
MLA
John Paul II Pope, . Letter of His Holiness Pope John Paul II to the elderly. Vatican: . 1999.
