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

APA Citation Edition Citation

(1938). Map of Britain in the Dark Ages: North sheet. Scale 1:1.000.000. Ordnance Survey.

Chicago Citation Edition Citation

Map of Britain in the Dark Ages: North Sheet. Scale 1:1.000.000. Southampton: Ordnance Survey, 1938.

MLA Citation Edition Citation

Map of Britain in the Dark Ages: North Sheet. Scale 1:1.000.000. Ordnance Survey, 1938.