TY  - GEN
AU  - Creswell,John W.
TI  - Research design: qualitative, quantitative, and mixed methods approaches 
SN  - 9781452226095
AV  - H62 .C74 2014
PY  - 2014///
CY  - Thousand Oaks
PB  - SAGE Publications
KW  - Social sciences
KW  - Statistical methods
KW  - Research
KW  - Methodology
N1  - Includes bibliographical references and index
ER  -