TY  - GEN
AU  - Layder, Derek 
TI  -  Investigative research: theory and practice
SN  - 9781446287538    
U1  - 300 23
PY  - 2018///
CY  - New Delhi
PB  - Sage Publications
KW  - Social sciences--Methodology
KW  - Social sciences--Research--Methodology
ER  -