TY  - BOOK
AU  - Yin, Robert K.
AU  - Case study research : design and methods
AU  - Series: Applied social research methods series: v.3
TI  - Case study research : design and methods 
SN  - 0761925538
PY  - 2003///
CY  - London 
PB  - SAGE 
KW  - Case method
KW  - Social sciences - Research - Methodology
N1  - Includes bibliographical references and index
ER  -