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