1. Aggleton, Chalmers. Models and theories: defining the terms. Nursing Times 80, 36: 24–28
2. The primacy of caring: stress and coping in health and illness;Benner,1989
3. Theory in a practice discipline: Part 1. Practice oriented theory;Dickoff;Nursing Research,1968
4. Truth and method;Gadamer,1989
5. Theoretical nursing: development and progress;Meleis,1985