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

APA Citation Edition Citation

(1933). Old Sarum: Celtic earthworks of Salisbury Plain, based on air photographs. 1:25,000. Ordnance Survey.

Chicago Citation Edition Citation

Old Sarum: Celtic Earthworks of Salisbury Plain, Based on Air Photographs. 1:25,000. Southampton: Ordnance Survey, 1933.

MLA Citation Edition Citation

Old Sarum: Celtic Earthworks of Salisbury Plain, Based on Air Photographs. 1:25,000. Ordnance Survey, 1933.