TY  - BOOK
AU  - Yin, Robert K.
TI  - Case study research : : design and methods
T2  - Applied social research methods series ; 
SN  - 0761925538
PY  - 2002///
CY  - Thousand Oaks, Calif. ; ,  London : 
PB  -  Sage, 
KW  - Social sciences
KW  - Research
ER  -