Lua APA (7ú heag.)
ebrary, Inc, & Peake, G. E. (2010). U.S. energy: Overview of the trends, statistics, supply and consumption. Nova Science Publishers.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Gregor E. Peake. U.S. Energy: Overview of the Trends, Statistics, Supply and Consumption. New York: Nova Science Publishers, 2010.
Lua MLA (9ú heag.)
ebrary, Inc, agus Gregor E. Peake. U.S. Energy: Overview of the Trends, Statistics, Supply and Consumption. Nova Science Publishers, 2010.
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