Text ( visual ) : unmediated Language and education / M.A.K. Halliday ; edited by Jonathan J. Webster. -- : pbk. -- London : Continuum , 2009, c2007. -- xi, 404 p. : ill. ; 24 cm. -- (Collected works of M.A.K. Halliday ; v. 9). -- Includes bibliographical references and index. -- ISBN 9781847065766 ; (BA89739329) ; https://ci.nii.ac.jp/ncid/BA89739329 Author Heading(s): Halliday, M. A. K. (Michael Alexander Kirkwood) ; Webster, Jonathan. -- Classification(s): LCC : P40.8 ; DC21 : 370.14. -- Subject Heading(s): LCSH : Language and education