TY  - BOOK
AU  - Ayllon,Teodoro
AU  - Azrin,Nathan H.
TI  -  Token economy: a motivational system for therapy and rehabilitation 
T2  - The Century psychology series
U1  - 616..8914 
PY  - 1968///
CY  - New York
PB  - Appleton-Century-Crofts
KW  - Token economy (Psychology)
N1  - Bibliography: p. 271-279
ER  -