KahnR: Work and Health. New York, Wiley & Sons, 1981.
2.
HartSHerriotP: Components of practice: A systems approach, in HallJWeaverB (eds): Distributive Nursing Practice: A Systems Approach to Community Health, New York, JB Lippincott Co, 1977.
3.
ColemanLJ: Orem's self-care concept of nursing, in RiehlJPRoyC (eds): Conceptual Models for Nursing Practice. New York, Appleton-Century-Crofts, 1980.
