Não informado. (2004). Highway research circular. National Research Council, Highway Research Board.
Chicagoスタイル(17版)引用形式Não informado. Highway Research Circular. Washington: National Research Council, Highway Research Board, 2004.
MLA(8版)引用形式Não informado. Highway Research Circular. National Research Council, Highway Research Board, 2004.
警告: この引用は必ずしも正確ではありません.