National Geographic Society (U.S.). (1981). Energy, facing up to the problem, getting down to solutions: A special report in the public interest. National Geographic Society.
Citace podle Chicago (17th ed.)National Geographic Society (U.S.). Energy, Facing Up to the Problem, Getting Down to Solutions: A Special Report in the Public Interest. Washington, D.C. (17th and M Sts. N.W., Washington 20036): National Geographic Society, 1981.
Citace podle MLA (8th ed.)National Geographic Society (U.S.). Energy, Facing Up to the Problem, Getting Down to Solutions: A Special Report in the Public Interest. National Geographic Society, 1981.
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