Hadley, A. T. (1968). Railroad transportation: Its history and its laws. Johnson Reprint Corp..
Chicagoスタイル(17版)引用形式Hadley, Arthur T. Railroad Transportation: Its History and Its Laws. N.Y.: Johnson Reprint Corp., 1968.
MLA(8版)引用形式Hadley, Arthur T. Railroad Transportation: Its History and Its Laws. Johnson Reprint Corp., 1968.
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