SQL to get PO Number, Invoice Number and Receipt Number inline

Here is the SQL query to get the PO number,Invoice number and Receipt number inline.

 SELECT DISTINCT
    PHA.SEGMENT1 PO_NUMBER,
    PR.PO_RELEASE_NUM,  
    AIA.INVOICE_NUM INVOICE_NUMBER,
    RSH.RECEIPT_NUM RECEIPT_NUMBER   
 FROM   
    PO_HEADERS_ALL PHA,
    PO_DISTRIBUTIONS_ALL PDA,
    AP_INVOICE_DISTRIBUTIONS_ALL AIDA,
    AP_INVOICES_ALL AIA,
    RCV_SHIPMENT_LINES RSL,
    RCV_SHIPMENT_HEADERS RSH ,
    PO_RELEASES_ALL PR,
    RCV_TRANSACTIONS RT
 WHERE
    PHA.PO_HEADER_ID = PDA.PO_HEADER_ID
    AND PDA.PO_DISTRIBUTION_ID = AIDA.PO_DISTRIBUTION_ID
    AND AIDA.INVOICE_ID= AIA.INVOICE_ID
    AND PHA.PO_HEADER_ID = RSL.PO_HEADER_ID
    AND RSL.SHIPMENT_HEADER_ID = RSH.SHIPMENT_HEADER_ID
    AND RSL.PO_RELEASE_ID = PR.PO_RELEASE_ID
    AND RSL.PO_HEADER_ID = PR.PO_HEADER_ID
    AND RSL.SHIPMENT_HEADER_ID = RT.SHIPMENT_HEADER_ID
    AND RSL.SHIPMENT_LINE_ID = RT.SHIPMENT_LINE_ID
    AND RT.TRANSACTION_ID=AIDA.RCV_TRANSACTION_ID
    AND PHA.SEGMENT1=NVL(:PO_NUM,PHA.SEGMENT1)
    AND PR.RELEASE_NUM=NVL(:PO_REL_NUM,PR.RELEASE_NUM)
ORDER BY 3;