TY  - BOOK
AU  - Creswell,John W.
TI  - Research Design: Qualitative,Quantitative,and Mixed Method Approaches
SN  - 9781452274614
U1  - 001.142  
PY  - 2014///
CY  - Los Angeles 
PB  - SAGE Publication
KW  - research design
N1  - includes bibliographical reference and subject index
ER  -