(en) « A billion here, a billion there », U.S. News and World Report, (lire en ligne, consulté le )
(en) « Harvesting Energy From Public Land May Owe U.S. », Washington Post, (lire en ligne)
(en) « Feds neglect to collect billions from big oil: Along with lax enforcement of safety rules, the agency that regulates drilling has failed to collect billions in fees », Miami Herald, (lire en ligne)
(en) « Assessment of Undiscovered Technically Recoverable Oil and Gas Resources of the Nation’s Outer Continental Shelf, 2006 », Minerals Management Service, (lire en ligne)