LoBiondo-Wood, Geri, 
Nursing research :  methods and critical appraisal for evidence-based practice /  Geri LoBiondo-Wood, PhD, RN, FAAN, Judith Haber, PhD, APRN, BC, FAAN.   - 8th edition.   - St. Louis, Missouri :  Elsevier,  [2014]   - xvii, 598 pages :  illustrations (colour) ;  24 cm