TY  - GEN
AU  - Creswell, John W
TI  - Research design: Qualitative, quantitative, and mixed methods approaches
SN  - 9781412965576
U1  - 300.72 
PY  - 2009///
CY  - Los Angeles
PB  - Sage
KW  - Social science - research methodology
KW  - Research methodology
KW  - Research design
KW  - Social Sciences
KW  - Social sciences - Stitistical methods
ER  -