TY  - BOOK
AU  - CRESWELL John W.
TI  - Research design: qualitative, quantitative, and mixed methods approaches 
SN  - 9781452226095 (hbk.) :
PY  - 2013///
CY  - Thousand Oaks, California
PB  - Sage Publications, 
KW  - SOCIAL SCIENCES
KW  -  RESEARCH
KW  -  METHODOLOGY
KW  -  STATISTICAL METHODS
N1  - Previous edition: c2009; Includes bibliographical references and index
ER  -