Cross, W. (1977). St. John of God: Patron saint of hospitals, the sick, nurses and all who look after the sick. London.
Chicago Style aipamenaCross, Walter. St. John of God: Patron Saint of Hospitals, the Sick, Nurses and All Who Look After the Sick. London, 1977.
MLA aipamenaCross, Walter. St. John of God: Patron Saint of Hospitals, the Sick, Nurses and All Who Look After the Sick. London, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.