Não informado. (2004). Fossil energy update. Energy Research and Development Administration, Technical Information Center.
Chicago-Zitierstil (17. Ausg.)Não informado. Fossil Energy Update. Oak Ridge, Tenn: Energy Research and Development Administration, Technical Information Center, 2004.
MLA-Zitierstil (8. Ausg.)Não informado. Fossil Energy Update. Energy Research and Development Administration, Technical Information Center, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.