Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Great Britain. Ordnance Survey. (1956). Ordnance Survey map of Roman Britain (3rd ed.). Ordnance Survey.

Chicago Citation Edition Citation

Great Britain. Ordnance Survey. Ordnance Survey Map of Roman Britain. 3rd ed. Chessington: Ordnance Survey, 1956.

MLA Citation Edition Citation

Great Britain. Ordnance Survey. Ordnance Survey Map of Roman Britain. 3rd ed. Ordnance Survey, 1956.