TY  - BOOK
AU  - Petri, Herbert L.
TI  - Motivation : theory, research, and applications / Herbert L. Petri
SN  - 0534143644
U1  - 153.8 PET 
CY  - Belmont, Calif. : Wadsworth Pub. Co., c1991.
KW  - Motivation (Psychology)
ER  -