TY  - BOOK
AU  - Stock, F. C.
AU  - Widdowson, J. D. A.
TI  - Learning about linguistics: an introductory workbook 
SN  - 0091180619
U1  - 410 
PY  - 1974///
CY  - London
PB  - Hutchinson Educational
KW  - Linguistics
N1  - Includes bibliographical references (p.185-186)
ER  -