Text ( visual ) : unmediated Aspects of language teaching / H.G. Widdowson. -- : [hbk] ; : pbk. -- Oxford ; Tokyo : Oxford University Press , 1990. -- xiii, 213 p. : ill., forms ; 22 cm. -- Bibliography: p. [197]-207 ; Includes index. -- ISBN 0194371832 ; 019437128X ; (BA10933088) ; https://ci.nii.ac.jp/ncid/BA10933088 Author Heading(s): Widdowson, H. G.. -- Classification(s): LCC : P51 ; DC20 : 407. -- Subject Heading(s): PRECIS : Languages. Teaching ; LCSH : Language and languages -- Study and teaching