TY  - BOOK
AU  - Yin, Robert K
TI  - Case study research and applications  : design and methods 
SN  - 978 1 506 33616 9
U1  - 300 722 YIN 
PY  - 2018///
CY  - Los Angeles 
PB  -  SAGE
KW  - SOCIAL SCIENCES RESEARCH METHODOLOGY
ER  -