↑Paul Mann, Lisa Gahagan, et Mark B. Gordon, "Tectonic setting of the world's giant oil and gas fields," in Giant Oil and Gas Fields of the Decade, 1990–1999, ed. Michel T. Halbouty (Tulsae, Oclahomae: American Association of Petroleum Geologists), p. 50, accessum 22 Iunii 2009.
Nexus externi
Res generales
"The Coming Energy Crisis?" commentarius a Iacobo L. Williams ex WTRG Economics et A. F. Alhajji ex Ohio Northern University scriptus, apud situm wtrg.com
"Powering the Future," commentarius a Michaele Parfit in National Geographic scriptus, apud situm www7.nationalgeographic.com