↑ For example: "Gulf Coast Energy Outlook" (PDF) (edisi Spring 2017). Center for Energy Studies. Diarkibkan daripada asal (PDF) pada 13 Apr 2018. Dicapai 13 Apr 2018 – melalui Economics & Policy Research Group. , p. 1 (" Unless stated otherwise, Gulf Coast hereafter specifically refers to the states of Texas, Louisiana, Mississippi, Alabama, and Florida").
