SQL - Last Audit Entry

Hi,

Hope someone can help....my SQL is not the best.

Below is my SQL to retrieve information from the Audit history but returns all the entries fro each defect. I am after the last entry only.... I am not sure how to incorporate the MAX function into my query.

SELECT
BG_BUG_ID                              as "DEFECT ID",
BG_STATUS                              AS "STATUS",
BG_SUMMARY                             as "SUMMARY",
TO_CHAR(BG_DETECTION_DATE,'dd/mm/yyyy')as "DATE RAISED",
BG_SEVERITY                            as "SEVERITY",
BG_PRIORITY                            as "PRIORITY",
AUDIT_PROPERTIES.AP_OLD_VALUE          as "OLD Assignee" ,
AUDIT_PROPERTIES.AP_NEW_VALUE          as "NEW Assignee" ,
TO_CHAR(AUDIT_LOG.AU_TIME,'dd/mm/yyyy')as "DATE CHANGED" ,
RCYC_NAME                              as "Location",
AL_DESCRIPTION                         as "Subject",
Targets.Target_Cycle                   as "Assigned to Cycle",
BG_RESPONSIBLE                         as "Assigned To",
TRUNC(SYSDATE - BG_DETECTION_DATE)     as "DAYS OPEN"

FROM BUG
inner join AUDIT_LOG on AU_ENTITY_ID = BG_BUG_ID
inner join AUDIT_PROPERTIES on AP_ACTION_ID = AU_ACTION_ID
INNER JOIN release_cycles on bg_detected_in_rcyc = rcyc_id
LEFT OUTER JOIN all_lists on bg_subject = al_item_id

LEFT OUTER JOIN
     (SELECT
            bg_bug_id as Defect_ID,
            rcyc_name as Target_Cycle
      from bug, release_cycles
      where bg_target_rcyc = rcyc_id
      ) Targets on Targets.Defect_ID = bg_bug_id
where bg_detected_in_rel in (1212)
and  RCYC_NAME in ('<<<cycle name>>>>','<<<cycle name>>>>')
and BG_STATUS <> 'Closed'
and AUDIT_LOG.AU_ENTITY_TYPE = 'BUG'
and AUDIT_PROPERTIES.AP_FIELD_NAME = 'BG_RESPONSIBLE'
order by  bg_bug_id,bg_detection_date,AUDIT_LOG.AU_TIME   asc

Any help would be grand

Cheers

Justin