Leedy, Paul D. Practical research // planning and design / Paul D. Leedy, Late of American University, Jeanne Ellis Ormrod, University of Northern Colorado (Emerita). - Eleventh edition. - Boston : Pearson, [2015] - xviii, 389 pages : illustrations ; 28 cm Includes bibliographical references and index. ISBN: 9781292095875 013374132X LCCN: 2014023060 Subjects--Topical Terms: Research--Methodology. LC Class. No.: Q180.55.M4 / L43 2016 Dewey Class. No.: 001.4LPP