APA (7th ed.) Citation

Great Britain. Ordnance Survey. (1920). Tourist map: [England and Wales]. Ordnance Survey Office.

Chicago Style (17th ed.) Citation

Great Britain. Ordnance Survey. Tourist Map: [England and Wales]. Southampton: Ordnance Survey Office, 1920.

MLA (8th ed.) Citation

Great Britain. Ordnance Survey. Tourist Map: [England and Wales]. Ordnance Survey Office, 1920.

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