Fawcett, J. (1993). Analysis and evaluation of nursing theories. Philadelphia : Davis.
Fawcett, J. (1995). Analysis and evaluation of conceptual models of nursing. 3rd ed, Philadelphia : Davis.
Leininger, M. M. (Ed.). (1991). Culture care diversity and universality : A theory of nursing. New York : National League of Nursing.
Marchione, J. (1992). Margaret Newman : Health as expanding consciousness (notes on nursing theories). New York : Sage Publications.
Merton, R. K. (1968). Social theory and social structure. enlarged ed, New York : Free Press.
Orem, D. E., Renpenning, K. M., & Taylor, S. G. (2003). Self-care theory in nursingea Orem : Self-care theory in nursing. New York : Springer.
Van Sell, S. L., & Kalofissudis, I. A. Formulating nursing theory. <http://www.scribd.com/doc/22269586/Formulating-Nursing-Theory> [2010, February 11].
Walker, L. O., & Avant, K. C. (2005). Strategies for theory construction in nursing. 4th ed, NJ : Pearson Prentice Hall.