"Forest of Dean: Introduction". A History of the County of Gloucester: Volume 5, Bledisloe Hundred, St. Briavels Hundred, the Forest of Dean. Victoria County History: 285–294. Archived from the original on 3 April 2020. Retrieved 3 May 2021 – via British History Online.
Robbins, Bill (1997). "South Gloucestershire: The Transition to Unitary Authority Status". Journal of Integrated Care. 5 (1): 18–23. doi:10.1108/14769018199700004.
drwhoguide.com
"K-9 and Company". Doctor Who Reference Guide. Archived from the original on 10 May 2012. Retrieved 29 December 2013.
english-heritage.org.uk
"Hailes Abbey". English Heritage. Archived from the original on 27 October 2019. Retrieved 3 May 2021.
"Abbreviations". Oxford English Dictionary. Archived from the original on 19 June 2020. Retrieved 28 June 2020.
"Forest of Dean: Introduction". A History of the County of Gloucester: Volume 5, Bledisloe Hundred, St. Briavels Hundred, the Forest of Dean. Victoria County History: 285–294. Archived from the original on 3 April 2020. Retrieved 3 May 2021 – via British History Online.