TY  - BOOK
AU  - Ayllon,Teodoro
AU  - Azrin, Nathan
TI  - The token economy: a motivational system for therapy and rehabilitation 
SN  - 013919357X
PY  - 1968///
CY  - Englewood Cliffs, N. J.
PB  - Prentice-Hall
KW  - Token economy (Psychology)
N1  - Includes index; p. 271-279
ER  -