Interni dokument društva Amazon: Trogodišnji plan: Usluge za međunarodne trgovce, srpanj 2009., str. 2.
Vittnesmål [Senior Vice President, Product Management-Retail, Amazon Corporate LLC, Förenta staterna, tidigare Vice President/General Manager Worldwide Operations, Amazon Corporate LLC, Förenta staterna], 15 juli 2014, s. 56, punkterna 13–15: ”So they were -- those two were very different, even though the physical processes was the same in both plants.”