Creswell, John W.
Designing and conducting mixed methods research /
John W. Creswell, Vicki L. Plano Claek.
- 2nd ed.
- Los Angeles : Sage, 2011.
- xxvi, 457 p : ill.
Includes bibliographical references and index.
9781412975179 :
Research --Evaluation.
Social sciences--Research methodology.
H62 / .C69