Cita APA

 O''Leary, T. J. (2011).  Microsoft Excel 2010: A case approach.  McGraw-Hill.

Chicago Style Citation

 O''Leary, Timothy J.  Microsoft Excel 2010: A Case Approach.  McGraw-Hill, 2011.

Cita MLA

 O''Leary, Timothy J.  Microsoft Excel 2010: A Case Approach.  McGraw-Hill, 2011.