TY  - BOOK
AU  - Creswell 
TI  - Research design : qualitative, quantitative, and mixed methods approaches 
SN  - 0761924418 
U1  - 300.72 CRE 2003 
PY  - 2003///
CY  - Thousand Oaks
PB  - Sage
KW  - Social sciences
KW  - Research
KW  - Methodology
KW  - Statistical methods
ER  -