Cita APA

Allen, C. F. (1889). Railroad curves and earthwork. New York: Spon & Chamberlain, 12 Cortlandt Street.

Citación estilo Chicago

Allen, C. Frank. Railroad Curves and Earthwork. New York: Spon & Chamberlain, 12 Cortlandt Street, 1889.

Cita MLA

Allen, C. Frank. Railroad Curves and Earthwork. New York: Spon & Chamberlain, 12 Cortlandt Street, 1889.

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