TY  - GEN
AU  - Creswell,John W.
TI  - Research design: qualitative, quantitative, and mixed methods approaches 
SN  - 9788132107484 (pbk.)
AV  - LB1028 .C742 2008
U1  - 370.72 
PY  - 2009///
CY  - Los Angles.
PB  - Sage
KW  - Research design
N1  - Includes bibliographical references and indexes
ER  -