Polit,Denise F., Essentials of nursing research : appraising evidence for nusing practice / by Denise F. Polit & Cheryl Tatano Beck . - 9th ed. - New Delhi CBS Publisher 2018 - 442p.: 24.5 cm. ISBN: 9789351298335 Subjects--Topical Terms: NursingNursing research Dewey Class. No.: 610.73