TY  - BOOK
AU  - Covey,Stephen R.
TI  - Principle-centered leadership / œc Stephen R. Covey
AV  - BF637.S8 C67 1991
PY  - 1999///, c1991
CY  - London
PB  - Simon & Schuster
KW  - Leadership
N1  - Includes index; Originally published : New York : Summit Books, 1991
ER  -