(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)