TY  - BOOK
AU  - Certo,Samuel C.
TI  - Supervision: concepts and skill-building 
SN  - 0073405000 (pbk.)
PY  - 2008///
CY  - Boston
PB  - McGraw-Hill/Irwin
KW  - Supervision of employees
N1  - Includes index; Includes bibliographical references
ER  -