Hartley, James. <br/><br/>
Designing instructional text / 
James Hartley. 
 - 3rd ed. 
 - London :  East Brunswick, N.J. :  Kogan Page ;  Nichols,  19 94. 
 - 183 p :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0893973998 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Textbooks--Authorship.<br/>Teaching--Aids and devices.<br/>Printing--Style manuals.
<br/><br/><label>Dewey Class. No.: </label>808.02 HAR