Melnyk, Bernadette Mazurek, 
Evidence-based practice in nursing & healthcare :  a guide to best practice /  Bernadette Mazurek Melnyk PhD, RN, APRN-CNP, FAANP, FNAP, FAAN, Ellen Fineout-Overholt PhD, RN, FNAP, FAAN.   - Fifth edition. International edition.   - 936 pages :  illustrations