TY  - BOOK
AU  - Ritchie,J
AU  - Lewis,J
AU  - Nicholls,CM
TI  - Qualitative research practice: a guide for social science students and researchers 
SN  - 9781446209127
PY  - 2014///
CY  - London
PB  -  Sage
KW  - Research design
KW  - Social sciences
ER  -