TY  - BOOK
AU  - Rivera Charlene ed
TI  - Ethnographic/sociolinguistic approach to language proficiency assessment
T2  - Multilingual matters; 8
U1  - P, M3 
PY  - 1983///
CY  - Clevedon
PB  - Multilingual Matters      
KW  - LINGUISTICS
N1  - Includes bibliography
ER  -