Não informado. (1946). Bulletin. National Research Council, Highway Research Board.
Chicagoスタイル(17版)引用形式Não informado. Bulletin. Washington: National Research Council, Highway Research Board, 1946.
MLA(8版)引用形式Não informado. Bulletin. National Research Council, Highway Research Board, 1946.
警告: この引用は必ずしも正確ではありません.