TY  - BOOK
AU  - Creswell, John W.
TI  - Research design: : Qualitative, quantitative, & mixed methods approaches
SN  - 9781452274614
AV  - H 62  CRE 2014
PY  - 2014///
CY  - Los Angeles
PB  - Sage
KW  - Social sciences-Research-Methodology
KW  - Social sciences-Statistical methods
ER  -