Hartley, James <br/><br/>
Designing instructional text / 
by James Hartley 
 - 2nd ed. 
 - London :  Kagen Paul,  1985 
 - 175 p. :  ill. ;  30 cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0850389437 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Text--books--Authorship<br/>Teaching--Aids and devices<br/>Printing--Style manuals