TY  - BOOK
AU  - Yin,Robert K.
AU  - Campbell,Donald T.
TI  - Case study research: design and methods 
SN  - 0803920571
PY  - 1984///
CY  - Beverly Hills
PB  - SAGE Publications
KW  - Case method
KW  - Social sciences
KW  - Research
N1  - Bibliography : p. 155-160
ER  -