Chung, S H <br/><br/>
Choice and delay of reinforcement.  [electronic resource] 

 -  Journal of the experimental analysis of behavior  Jan 1967 
 - 67-74 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-5002 
<br/><br/><label>Standard No.: </label>10.1901/jeab.1967.10-67  doi