TY  - BOOK
AU  - De Charms, Richard,
AU  - Shea, Dennis J.
TI  - Enhancing motivation: Change in the classroom 
T2  - The Irvington social relations series
SN  - 0470013923
AV  - LB1065 D38
PY  - 1976///
CY  - New York
PB  - Irvington p ; distributed by halsted press division of j. wiley
KW  - Motivación en la educación
ER  -