TY  - BOOK
AU  - Creswell,John W.,& J.David Creswell
AU  - Creswell,J.David
TI  - Research Design: qualitative, quantitative, and mixed methods approaches 
SN  - 9781506386768
AV  - H62 .C696 2018
PY  - 2018///
CY  - Los Angeles
PB  - Sage Edge
KW  - Social sciences
KW  - Research
KW  - Methodology
KW  - Statistical methods
KW  - Research Design
N1  - Includes bibliographical references (pages 253-261) and indexes
ER  -