TY  - BOOK
ED  - Cooper, Charles R.
ED  - Green-baum, Sidney.
TI  - Studying writing : linguistic approches
T2  - Written communication annual : an international survey of research and theory;no 1
U1  - 418 
PY  - 1986///
CY  - New Delhi
PB  - Sage Publication research and theoty; no.1
ER  -