TY  - BOOK
AU  - Certo, Samuel C.
TI  - Supervision : : concepts and skill-building 
SN  - 978-0-07-122045-3
AV  - 658.302 C33s 
PY  - 2010///
CY  - New York
PB  - McGraw-Hill/Irwin
KW  - Supervision of employees
N1  - Includes index
ER  -