1. American Association of Colleges of Nursing. (1993). Addressing nursing's agenda for health care reform. Washington D.C.: Author.
2. Dillman DA (1978). Mail and telephone surveys: The Total Design Method. New York: John Wiley and Sons.
3. Institute of Medicine. (1988). TAe primary care physician in occupational and environmental health. Washington D.C.: National Academy Press.
4. Mancino D. (1985). The future and environmental health nursing. Imprint 32(3) 42-45.
5. Nightingale P. (1859). Notes on nursing: What it is and what it is not. London: Harrison.