Não informado. (2020). Modern Railroads. Watson Publications.
Chicagoスタイル(17版)引用形式Não informado. Modern Railroads. Chicago, Ill: Watson Publications, 2020.
MLA(8版)引用形式Não informado. Modern Railroads. Watson Publications, 2020.
警告: この引用は必ずしも正確ではありません.