TY  - BOOK
AU  - Patton,Michael Quinn
TI  - How to use qualitative methods in evaluation / 
PY  - 1987///
CY  - London  : 
PB  - Sage Publications , 
KW  - Social sciences
KW  - Methodology
KW  - Evaluation research
N1  -  Includes index;  Bibliography: p. 170-173
ER  -