links between xla_distribution_links and AP_INVOICES_ALL and AP_INVOICE_DISTRIBUTIONS_ALL

Hi all,

Could you tell me how to link these 3 tables( xla_distribution_links and AP_INVOICES_ALL and AP_INVOICE_DISTRIBUTIONS_ALL) together in a SQL query ,please

 i want to retrieve                                                   ( sum (UNROUNDED_ENTERED_DR),

                                                                                  sum (UNROUNDED_ENTERED_CR),

                                                                                  sum (UNROUNDED_ACCOUNTED_CR),

                                                                                  sum (UNROUNDED_ACCOUNTED_DR)

                                                                              ) columns from the xla_distribution_links 

with the invoices event_type_code = PREPAYMENT APPLIED  or PREPAYMENT UNAPPLIED

Thanks