Não informado. (2020). Modern Railroads. Cahners Publications Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Modern Railroads. Des Plaines, Ill: Cahners Publications Company, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Modern Railroads. Cahners Publications Company, 2020.
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