Não informado. (1948). Highway Engineer. Institution of Highway Engineers.
Chicagoスタイル(17版)引用形式Não informado. Highway Engineer. London: Institution of Highway Engineers, 1948.
MLA(8版)引用形式Não informado. Highway Engineer. Institution of Highway Engineers, 1948.
警告: この引用は必ずしも正確ではありません.