Mertens, Donna M., Research and evaluation in education and psychology : integrating diversity with quantitative, qualitative, and mixed methods / Donna M. Mertens. - Fourth edition. - Los Angeles : Sage, 2015. - xxiii, 509 pages : illustrations ; 25 cm. Includes bibliographical references and index. ISBN: 9781452240275 Subjects--Topical Terms: Education--Research--Methodology.Psychology--Research--Methodology.Education--Research--Methodology. LC Class. No.: LB1028 / .M3964 2010 Dewey Class. No.: 150.724 / M46