APA (7th ed.) Citation

Great Britain. Ordnance Survey. (1934). Map of the county borough of Preston (Rev. April 1934.). Septimus Ward, Ltd., Litho.

Chicago Style (17th ed.) Citation

Great Britain. Ordnance Survey. Map of the County Borough of Preston. Rev. April 1934. Preston: Septimus Ward, Ltd., Litho, 1934.

MLA (8th ed.) Citation

Great Britain. Ordnance Survey. Map of the County Borough of Preston. Rev. April 1934. Septimus Ward, Ltd., Litho, 1934.

Warning: These citations may not always be 100% accurate.