Hartley, James. <br/><br/>
Designing instructional text / 
James Hartley. 
 - 2nd ed. 
 - London :  Kogan Page,  1985. 
 - 175 p. :  ill. ;  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching--Aids and devices.<br/>Textbooks--Authorship.<br/>Printing--Style manuals.
<br/><br/><label>Dewey Class. No.: </label>070.52