Crystal Reports Sub report data on a main report

Message

     I have created several sub reports that return my desired values from various tables. I would like to now 'merge' the information from the sub reports on a main report.

sub report A                 Sub report B          Sub report C

Record 1                          Record 1                Record 1
    detail a                             detail b                  detail c

                            Main Report
Record 1
    detail a
    detail b
    detail c

the reason for the sub reports is that the different values are in the same table and there are multiple entries in the table and I only want the latest entry. So I have sorted the desired info into the sub report, but have yet to figure out how to format on a main report.

Thanks in advance for any insight,