Não informado. (1974). Directory. Transportation Research Board, National Research Council.
Chicagoスタイル(17版)引用形式Não informado. Directory. Washington: Transportation Research Board, National Research Council, 1974.
MLA(8版)引用形式Não informado. Directory. Transportation Research Board, National Research Council, 1974.
警告: この引用は必ずしも正確ではありません.