Mertens, Donna M. Research and evaluation in education and psychology : integrating diversity with quantitative, qualitative, and mixed methods / Donna M. Mertens. - 2nd ed. - London : Sage Publications, c2005. - xxiii, 507 p. ; 26 cm. Include index ISBN: 0761928057 (pbk.) Subjects--Topical Terms: Education--Research--Methodology.Psychology--Research--Methodology. Dewey Class. No.: 370.72 / MER 2005