Polit, Denise F. Essentials of nursing research: methods, appraisals, and utilization/ Denise F. Polit and Cheryl Tatano Beck - Sixth edition. - Philadelphia, PA Lippincott Williams and Wilkins - xiii, 554 pages ; 23 cm. Includes bibliographic references and indexes. ISBN: 0781749727 (alkaline paper) 9780781749725 LCCN: 2004027850 Subjects--Topical Terms: Nursing--Research. LC Class. No.: RT81.5 Dewey Class. No.: 610.73072 / 22