Cunliffe, Barry W., Iron Age Communities in Britain, Fourth Edition: An Account of England, Scotland and Wales from the Seventh Century BC, Until the Roman Conquest, near Figure 1.4, 2012 (4th edition), Routledge, [1] google preview, with no page numbers]
Yorke, Barbara (1982). "The Foundation of the Old Minster and the Status of Winchester in the Seventh and Eighth Centuries". Proceedings of the Hampshire Field Club and Archaeological Society (38): 79–80. ISSN0142-8950.