TY - BOOK AU - Polit,Denise F. AU - Beck,Cheryl Tatano TI - Nursing research SN - 9781975154141 (pbk.) : U1 - 610.73072 23 PY - 2020/// CY - Philadelphia PB - Lippincott Williams & Wilkins KW - Nursing KW - Research KW - Methodology N1 - Previous edition: Philadelphia: Wolters Kluwer Health, 2017; Includes bibliographical references and index ER -