TY  - BOOK
AU  - Covey, Stephen R., 
TI  - 7 habits of highly effective people: powerful lessons in personal change 
SN  - 9781471131820
U1  - 158.1 COV.S 
PY  - 2013///
CY  -  London : 
PB  -  Simon & Schuster, 
ER  -