National Academy of Engineering. Program Office & Helm, J. L. (1990). Energy: Production, consumption, and consequences. National Academy Press.
Cytowanie według stylu Chicago (wyd. 17)National Academy of Engineering. Program Office i John L. Helm. Energy: Production, Consumption, and Consequences. Washington, D.C.: National Academy Press, 1990.
Cytowanie według stylu MLA (wyd. 9)National Academy of Engineering. Program Office i John L. Helm. Energy: Production, Consumption, and Consequences. National Academy Press, 1990.