"Grassland on Cadbury Hill"(PDF). Yatton and Congresbury Wildlife Action Group. Archived from the original(PDF) on 25 September 2015. Retrieved 4 March 2015.
yacwag.org.uk
"Grassland on Cadbury Hill"(PDF). Yatton and Congresbury Wildlife Action Group. Archived from the original(PDF) on 25 September 2015. Retrieved 4 March 2015.