Have you checked into QuickBooks, to determine which format it requires?
I'm not aware of a built-in facility in Access that exports directly into
QuickBooks (unless QuickBooks has recently adopted a less proprietary data
structure).
I haven't tried it but you might want to take a look.
There also used to be a way to create a transaction file which you could
import into Quickbooks. Each transaction would have a header and one or more
detail lines. I used it for a while but it was very tedious because I
couldn't find a way to verify that the Customer or Vendor record existed
before creating invoice or Purchase Order details for it. I'm sorry but I no
longer have a link for the specs on that transaction file.