Designing and conducting mixed methods research /
John W. Creswell, Vicki L. Plano Clark.
- 2nd ed.
- Los Angeles : SAGE Publications, 2011.
- xxvi, 457 p. : ill. ; 24 cm.
Includes bibliographical references (p. 419-431) and indexes.
9781412975179 (pbk.)
Social sciences--Research--Methodology. Research--Evaluation.