Luanna taifid

Lua APA (7ú heag.)
National Research Council (U.S.). Committee on the Strategic Assessment of the U.S. Department of Energy's Coal Program, ebrary, Inc, Longwell, J. P., & Rubin, E. S. (1995). Coal: Energy for the future. National Academy Press.
Lua i Stíl Chicago (17ú heag.)
National Research Council (U.S.). Committee on the Strategic Assessment of the U.S. Department of Energy's Coal Program, Inc ebrary, John P. Longwell, agus Edward S. Rubin. Coal: Energy for the Future. Washington, D.C.: National Academy Press, 1995.
Lua MLA (9ú heag.)
National Research Council (U.S.). Committee on the Strategic Assessment of the U.S. Department of Energy's Coal Program, et al. Coal: Energy for the Future. National Academy Press, 1995.
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