APA (7th ed.) Citation

Great Britain. Ordnance Survey & British Geological Survey. (1982). British Geological Survey 1: 50 000 series. Ordnance Survey.

Chicago Style (17th ed.) Citation

Great Britain. Ordnance Survey and British Geological Survey. British Geological Survey 1: 50 000 Series. Southampton, Eng.: Ordnance Survey, 1982.

MLA (8th ed.) Citation

Great Britain. Ordnance Survey and British Geological Survey. British Geological Survey 1: 50 000 Series. Ordnance Survey, 1982.

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