TY  - BOOK
AU  - Yin, Robert K
TI  - Case study research : design and methods 
SN  - 978 1 452 24256 9
U1  - 300 72 YIN 
PY  - 2014///
CY  - London 
PB  -  SAGE
KW  - SOCIAL SCIENCES RESEARCH CASE METHOD
ER  -