Programed learning :  a critical evaluation / 
[edited by] J.L. Hughes. 
 - London :  Pitman,  [n.d.]. 
 - 238 p. :  ill. ;  22 cm. 
<br/><br/>Bibliography: p. 126. 
<br/><br/><label>LCCN: </label>63-21734 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programmed instruction.