1. Epigenesis of the Nurse Practitioner Role
2. JoAnn Ashley , Hospitals, Paternalism, and the Role of the Nurse , Teachers College Press, N.Y.: Teachers College, Columbia University, 1976 , pp.4 -20 .
3. Titus Burckhardt, and Stoddart William , Alchemy (), Baltimore, Md.: Penguin Books, Inc., 1971 , pp.133 -134 .