Hector, Russell (28 de abril de 2008), Rest in peat, The Guardian, consultado em 3 de julho de 2010
worldcat.org
Hodgson & Brennand 2006, pp. 55–56 Hodgson, John; Brennand, Mark (2006), «The Prehistoric Period Resource Assessment», The Association for Local Government Archaeological Officers and English Heritage with The Council for British Archaeology North West, The Archaeology of North West England: an Archaeological Framework for North West England, ISSN0962-4201, 8 (18): 23–58
Philpott 2006, p. 79 Philpott, Rob (2006), «The Romano-British Period Resource Assessment», The Association for Local Government Archaeological Officers and English Heritage with The Council for British Archaeology North West, The Archaeology of North West England: an Archaeological Framework for North West England, ISSN0962-4201, 8 (18): 59–90