6Cowin LS,Hengstbe rger-Sims C,Eagar SC,et al. Competency measure- ments:testing convergent validity for two measures[J], J Adv Nurs,2008, 64(3) : 272-277.
7Lorraine Olszewski Walker;Kay Coalson Avant,Strategies for Theory Construction in Nursing [M].4%d. Pearson Prentice Hall. Upper Saddle River, 2005 : 39-46.
8Paley J. How not to clarify concepts in nursing[J]. J Adv Nuts,1996,24:572-578.