Reed PG, Shearer NBC. Perspectives on nursing theory. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins; 2012.
Omery A, Kasper CE, Page GG. In search of nursing science. Thousand Oaks: Sage.
Kikuchi JF, Simmons H. Philosophic inquiry in nursing. New York: Sage Publications; 1992.
Claxton G. Cognitive psychology: New directions. London: Routledge & Kegan Paul; 1980.
Meleis AI. Theoretical nursing : development and progress. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins; 2011.
Newman MA, Sime AM, Corcoran-Perry SA. The focus of the discipline of nursing. ANS. Advances in Nursing Science. 1991;14(1):1-6.
Roy C, Jones DA. Nursing knowledge development and clinical practice: Opportunities and directions. New York: Springer Publishing Company; 2006.
Roy SC, Jones DAA. Nursing knowledge development and clinical practice: opportunities and directions. New York: Springer Publishing Company; 2006.
Willis DG, Grace PJ, Roy C. A central unifying focus for the discipline: facilitating humanization, meaning, choice, quality of life, and healing in living and dying. ANS. Advances in Nursing Science. 2008;31(1):E28-40.
Jarrin OF. An integral philosophy and definition of nursing: Implications for a unifying meta-theory of nursing. School of Nursing Scholarly Work; 2006.