TY  - BOOK
AU  - Creswell, John W.
TI  - Research Design: qualitative, quantitive, and mixed methods approaches
SN  - 9781412965576
U1  - 001.42 CRE 2009 
CY  - Los Angeles; Sage, 2009
KW  - Research design
KW  - Research methods
N1  - Glossary, references, & indice included
ER  -