Polit, Denise F. Nursing research : generating and assessing evidence for nursing practice / Denise F. Polit and Cheryl Tatano Beck. - 9th ed. - Philadelphia : Wolters Kluwer 2012. - xiv, 802p. : ill. Includes bibliographical references and index. ISBN: 9781451109146 Subjects--Topical Terms: Nursing Research - Methods. LC Class. No.: RT 81.5 POL 2012