TY  - BOOK
AU  - Petri, Herbert L.
TI  - Motivation : theory, research, and applications
SN  - 0534204600
U1  - 153.8 
PY  - 1996///
CY  - New York
PB  - Brooks/Cole Publishing
KW  - Psychology
KW  - Clinical Psychology
KW  - Special Education
KW  - Motivation
ER  -