TY  - BOOK
AU  - Lepper,Mark R.
AU  - Greene,David
TI  - The hidden costs of reward: : new perspectives on the psychology of human motivation 
SN  - 047026487X
PY  - 1978///
CY  - Hillsdale, N.J.
PB  - Lawrence Erlbaum Associates
KW  - Reward (Psychology)
KW  - Motivation (Psychology)
N1  - Includes bibliographical references and indexes
ER  -