Não informado. (1922). American highways. American Association of Highway Officials.
Chicagoスタイル(17版)引用形式Não informado. American Highways. Washington: American Association of Highway Officials, 1922.
MLA(8版)引用形式Não informado. American Highways. American Association of Highway Officials, 1922.
警告: この引用は必ずしも正確ではありません.