TY  - BOOK
AU  - Patton, Michael Quinn
TI  - Qualitative research and evaluation methods 
SN  - 978-0-7619-1971-6
U1  - 300.723 PAT 
PY  - 2002///
CY  - California 
PB  -   Sage Publications
KW  - Social sciences -Methodology
ER  -