TY  - BOOK
AU  - Adler Patricia A
AU  -  Adler Peter
TI  - Membership roles in field research
T2  - Qualtitative research methods . 6
U1  - Yb4, M7 
PY  - 1987///
CY  - London
PB  - Sage          
N1  - Bibliography P88-94
ER  -