TY  - BOOK
AU  - : Creswell, John W.
AU  - Creswell, J. David.
TI  - Research design : : qualitative, quantitative, and mixed methods approaches 
SN  - 9781506386768
U1  - 300.72 23
PY  - 2018///
CY  - Thousand Oaks, California
PB  - SAGE Publication
KW  - Social sciences--Research--Methodology
KW  - Social sciences--Statistical methods
KW  - Social service--Research--Methodology
ER  -