Polit, Denise F. Nursing research : generating and assessing evidence for nursing practice / Denise F. Polit, Cheryl Tatano Beck. - 9th ed. - Philadelphia ; Wolters Kluwer Health, c2012. - 471p. : black and white illustrations ; 23 cm. Includes index. ISBN: 9781469802299 Subjects--Topical Terms: Nursing --Research--Methodology. Dewey Class. No.: CIR 610.73072 P769n 2012