TY  - BOOK
AU  - Bernard, H Russell  .
TI  - Social research methods: qualitative and quantitative approaches / 
SN  - 9781412978545
U1  - 001.42 
PY  - 2013///
CY  - London : 
PB  - Sage , 
KW  - Social sciences-research
KW  - Research methodology
ER  -