TY  - BOOK
AU  - Creswell, John W. 
TI  - Research design Qualitative and Quantitative Approaches
SN  - 0803952554
U1  - Fil 300.72 C86 1994  
PY  - 1994///
CY  - Thousand Oaks London New Delhi
PB  - Sage Publication
KW  - Social sciences - research - methodology.
KW  - Social science - statistical methods.
ER  -