Graziano Research methods : a process of inquiry / Anthony M. Graziano, Michael L. Raulin. - 6th ed.. - Boston Pearson Allyn and Bacon 2007. - xxxi, 447p. ill. 25cm Includes bibliographical references (p. 424-433) and indexes ISBN: 0205512216 Subjects--Topical Terms: Research--Methodology Dewey Class. No.: 001.42 GRA 2007