Hartley James <br/><br/>
Designing instructional text 

 - 3rd 
 - London, UK  Kogan Page Ltd.   1994 
 - 183p. 
<br/><br/><label>ISBN: </label>0-7494-1037-X 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Textbook-Authorship