Não informado. (2001). Bibliography. National Research Council, Highway Research Board.
Chicagoスタイル(17版)引用形式Não informado. Bibliography. Washington: National Research Council, Highway Research Board, 2001.
MLA(8版)引用形式Não informado. Bibliography. National Research Council, Highway Research Board, 2001.
警告: この引用は必ずしも正確ではありません.