TY  - BOOK
AU  - Cresswell,John W.
TI  - Research design: qualitative, quantitative and mixed method approaches 
SN  - 0761924426
PY  - 2003///
CY  - Thousand Oaks, Calif.
PB  - Sage
KW  - Social sciences
KW  - Research
KW  - Methodology
KW  - Statistical methods
N1  - Includes bibliographical references and index
ER  -