Tham khảo Lập hóa đơn điện tử

  1. ↑ tieto. (2009). The future of E-invoicing, Pg. 5.
  2. ↑ Accounting Tools. (2013). Accounts Payable Controls.
  3. ↑ GXS. (n.d.). Lost? Don't Know What to look for in an e-invoiceing solution?
  4. ↑ US Bank, Scott Hesse. (2010, August 9). Electronic invoice Presentment and Payment (EIPP)
  5. ↑ Hill, M. G. (n.d.). A brief history of Electronic Data Interchange, pg 6.
  6. ↑ Bruno Koch, G. (2013, April). E-Invoicing/ E-Billing.
  7. ↑ E-Invoicing and Supplier Connectivity. (2015). Transcepta.