1. Calder JM: The Story of Nursing. London, Methuen & Co, Ltd, 1971, pp 10–14, 19.
2. Dolan JA: History of Nursing. Philadelphia, WB Saunders Co, 1969, pp 77–85, 222, 338–339, 354.
3. Woodham-Smith C: Florence Nightingale 1820–1910. London, Constable, 1950, pp 89–91, 142–144.
4. Kalish PA, Kalish BJ: The Advance of American Nursing. Little, Brown Co, 1978, p 103.