TY  - BOOK
AU  - Hawkins John A
TI  - Definitenss and indefinitensess :  a study in reference and grammaticality prediction
T2  - Croom helm linguistics series
U1  - P111:3, L8 
PY  - 1978///
CY  - London
PB  - Croom Helm      
KW  - LINGUISTICS
ER  -