Não informado. (1986). Transportation energy research. U.S. Department of Energy, Office of Scientific and Technical Information.
Citação do estilo Chicago (17ª ed.)Não informado. Transportation Energy Research. Oak Ridge, Tenn: U.S. Department of Energy, Office of Scientific and Technical Information, 1986.
Citação MLA (8ª ed.)Não informado. Transportation Energy Research. U.S. Department of Energy, Office of Scientific and Technical Information, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.