APA (7th ed.) Citation

Smith, B. (1851). An improved system of working railways, whereby, the assimilation of the broad and narrow gauges may be effected. H. Humphreys.

Chicago Style (17th ed.) Citation

Smith, Benjamin. An Improved System of Working Railways, Whereby, the Assimilation of the Broad and Narrow Gauges May Be Effected. Carnarvon: H. Humphreys, 1851.

MLA (9th ed.) Citation

Smith, Benjamin. An Improved System of Working Railways, Whereby, the Assimilation of the Broad and Narrow Gauges May Be Effected. H. Humphreys, 1851.