James Hartley <br/><br/>
Designing Instructional Text 
by James Hartley 
 - UK  Routledge, Taylor & Francis Group  1994 
 - 183p. 
<br/><br/><label>ISBN: </label>9780749410377 
<br/><br/><label>Dewey Class. No.: </label>371.33  / HAR