APA (7th ed.) Citation

Great Britain. Ordnance Survey. (1964). Map of Hadrian's Wall. The Survey.

Chicago Style (17th ed.) Citation

Great Britain. Ordnance Survey. Map of Hadrian's Wall. Chessington, Surrey: The Survey, 1964.

MLA (9th ed.) Citation

Great Britain. Ordnance Survey. Map of Hadrian's Wall. The Survey, 1964.

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