Skinner, Burrhus Frederic. <br/><br/>
Contingencies of reinforcement ; a theorical analysis 

 - New York :  Appleton-Century-Crofts,  1969 
 - 319 p. 
 - The century paychology series .
 - The century paychology series .
<br/><br/><label>LCCN: </label>57127 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conducta (Psicología)
<br/><br/><label>Dewey Class. No.: </label>150  / S45