TY  - GEN
AU  - O'brien James A.
AU  -  Marakas,George M.
TI  - Management information systems/ by James A. O'brien, George M. Marakas.  
SN  - 9780071221092
AV  - T 58.6  obr
CY  - New York :  McGraw-Hill Irwin,  2011.
KW  - Management information systems
ER  -