Polit, Denise F. Essentials of nursing research : methods, appraisal, and utilization / Denise F. Polit, Bernadette P. Hungler. - 3rd ed. - Philadelphia : Lippincott, c1993. - xiv, 479 p. : ill. ; 24 cm. Includes bibliographical references and indexes. ISBN: 0397549229 LCCN: 92049798 Subjects--Topical Terms: Nursing--Research.Nursing Research. LC Class. No.: RT81.5 / .P63 1993 Dewey Class. No.: 610.73/072 National Library of Medicine Call No.: WY 20.5 P769e