Research design : qualitative, quantitative, and mixed methods approaches /
John W. Creswell, Department of Family Medicine, University of Michigan, J. David Creswell, Department of Psychology, Carnegie Mellon University.
- fourth edition.
- London Sage publication 2014
- xxi, 190 pages ; 25 cm
Includes bibliographical references and indexes.
9789353287351
Social sciences--Research--Methodology. Social sciences--Statistical methods.