1. 1. Lewis GK: Nurse-patient Communication. Dubuque Iowa Wm C Brown Co 1973.
2. 2. Tamir LM: Communication and the Aging Process. New York Pergamon Press Inc. 1979.
3. 3. Hall ET: The Silent Language. Greenwich Conn. Fawcett Publications Inc. 1959.
4. 4. Mortensen DC: Communication: The Study of Human Interaction. New York McGrawHill 1972.
5. 5. King IM: A Theory for Nursing. New York John Wiley & Sons 1981.