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.
"This best-selling text pioneered the comparison of qualitative, quantitative, and mixed method research design. For all three approaches, John W. Creswell and new co-author J. David Creswell include a preliminary consideration of philosophical assumptions, key elements of the research process,...
Thousand Oaks, California :
SAGE Publications, Inc.,