Blakely, E <br/><br/>
Rules: Function-altering contingency-specifying stimuli.  [electronic resource] 

 -  The Behavior analyst  1987 
 - 183-7 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0738-6729 
<br/><br/><label>Standard No.: </label>10.1007/BF03392428  doi