Cross, W. (1977). St. John of God: Patron saint of hospitals, the sick, nurses and all who look after the sick. London.
Dyfyniad Arddull ChicagoCross, Walter. St. John of God: Patron Saint of Hospitals, the Sick, Nurses and All Who Look After the Sick. London, 1977.
Dyfyniad MLACross, Walter. St. John of God: Patron Saint of Hospitals, the Sick, Nurses and All Who Look After the Sick. London, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.