Dyfyniad APA

Roebling, J. A. (1856). Memoir of the Niagara Falls suspension and Niagara Falls International bridge.

Dyfyniad Arddull Chicago

Roebling, John Augustus. Memoir of the Niagara Falls Suspension and Niagara Falls International Bridge. London, 1856.

Dyfyniad MLA

Roebling, John Augustus. Memoir of the Niagara Falls Suspension and Niagara Falls International Bridge. 1856.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.