National Academy of Engineering. Program Office & Helm, J. L. (1990). Energy: Production, consumption, and consequences. National Academy Press.
Citazione stile Chigago Style (17a edizione)National Academy of Engineering. Program Office e John L. Helm. Energy: Production, Consumption, and Consequences. Washington, D.C.: National Academy Press, 1990.
Citatione MLA (9a ed.)National Academy of Engineering. Program Office e John L. Helm. Energy: Production, Consumption, and Consequences. National Academy Press, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.