Rescorla, R. A. & 
Wagner, A. R. (
1972) A theory of Pavlovian conditioning: Variations in the effectiveness of reinforcement and non-reinforcement. In: 
Classical conditioning II: Current theory and research, ed. 
Black, A. H. & 
Prokasy, W. F.. 
Appleton-Century-Crofts. [aJST, PJB, SK, WJJ, EJK, HDK, DL, GM]
Google Scholar