Willis, Barry. <br/><br/>
Distance education :  a practical guide / 
Barry Willis. 
 - Englewood Cliffs, N.J. :  Educational Technology Publications,  c1993. 
 - x, 138 p. :  ill. 
<br/><br/><label>ISBN: </label>0877782555 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distance education--Handbooks, manuals, etc.