TY  - GEN
AU  - Creswell, John W
TI  - Research design: qualitative, quantitative and mixed methods approaches 
SN  - 0761924418
U1  - 300.72 
PY  - 2003///
CY  - London
PB  - Sage
KW  - Qalitative research
KW  - Social science
KW  - Social science research
ER  -