Duffy, Thomas M. and Waller, Robert <br/><br/>
Designing usable texts 

 - New York  ; Academic Press  , 1985 
 - xv,423p. 
<br/><br/><label>ISBN: </label>0122232607   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/>Methods Of Instruction<br/>Methods Of Teaching
<br/><br/><label>Dewey Class. No.: </label>371.33  / DUF