TY  - BOOK
AU  - Certo,Samuel C.
TI  - Supervision: concepts and skill-building 
SN  - 9780073381510
AV  - HF5549.12  .C47 2010
PY  - 2010///
CY  - New York
PB  - McGraw-Hill Irwin
KW  - Supervision of employees
ER  -