TY  - BOOK
AU  - Yin, Robert K.
TI  - Case study research: : design and methods 
SN  - 1412960991
AV  - H62  .Y56 2009
PY  - 2009///
CY  - Thousand Oaks, Calif. : 
PB  - Sage Publications
KW  - Case method
KW  - Social sciences
KW  - Social sciences -- Research -- Methodology
ER  -