Polit, Denise F. Nursing research : generating and assessing evidence for nursing practice / Denise F. Polit, Cheryl Tatano Beck. - 8th ed - xviii, 796 p. ; 23 cm. + 1 CD-ROM ISBN: 9780781794688 Subjects--Topical Terms: Nursing--Research--Methodology LC Class. No.: RT 81.5 P64 2008