TY  - BOOK
AU  - Creswell,John W.
TI  - Research design: qualitative, quantitative and mixed method approaches 
SN  - 9781452274614 (pbk.)
PY  - 2014///], ©2014
CY  - California
PB  - SAGE Publications
KW  - Social sciences
KW  - Research
KW  - Methodology
KW  - Statistical methods
N1  - Includes bibliographical references (pages 251-260) and indexes
ER  -