Vogel, R. M. (1971). Roebling's Delaware & Hudson Canal aqueducts. Washington: Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.].
Chicago Style CitationVogel, Robert M. Roebling's Delaware & Hudson Canal Aqueducts. Washington: Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1971.
MLA CitationVogel, Robert M. Roebling's Delaware & Hudson Canal Aqueducts. Washington: Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1971.