DePoy, Elizabeth Introduction to research : understanding and applying multiple strategies / Elizabeth DePoy, Laura N. Gitlin. - 5th ed. - St. Louis, Missouri : Elsevier, 2016. - xiv, 398 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 9780323261715 (pbk. : alk. paper) Subjects--Topical Terms: Research DesignBiomedical Research Dewey Class. No.: 362.1072 / D I