Polit, Denise F. Nursing research : principles and methods / Denise F. Polit, Cheryl Tatano Beck. - 7th ed. - Philadelphia : Lippincott Williams & Wilkins, c2004. - xvii, 758 p. : ill. (chiefly col.) ; 24 cm. Includes bibliographical references and index. ISBN: 0781737338 LCCN: 2002043422 Subjects--Topical Terms: Nursing--Research--Methodology.Nursing Research--methods. LC Class. No.: RT81.5 / .P64 2004 Dewey Class. No.: 610.73/072 National Library of Medicine Call No.: WY 20.5 / P769n 2003