1. Discoveries and Opinions of Galileog;Drake,1957
2. How the concept of professions evolved in the work of historians of medicine;Burnham;Bull Hist Med,1996
3. A History of Nursing;Nutting,1974
4. A General History of Nursing;Seymer,1932
5. History of Nursing. (Revised by Dolan JA, 11th ed);Goodnow,1963