how to change date-time format to DD-Mon-YYYY HH:MM:SS (ie. 05-May-2015 16:41:35)

Dear All,

SELECT LONGTODATE(wo.CREATEDTIME) "Created Time" from WorkOrder wo

how to change date-time format to DD-Mon-YYYY HH:MM:SS (ie. 05-May-2015 16:41:35)

please help

Thanks
Win