Marsh, T; Hannaford, J (编). UK Hydrographic Register(PDF). Hydrological data UK series. Wallingford, Oxfordshire: Centre for Ecology & Hydrology. 2008 [9 September 2020]. ISBN 978-0-9557672-2-7. (原始内容(PDF)存档于5 October 2013).
Marsh, T; Hannaford, J (编). UK Hydrographic Register(PDF). Hydrological data UK series. Wallingford, Oxfordshire: Centre for Ecology & Hydrology. 2008 [9 September 2020]. ISBN 978-0-9557672-2-7. (原始内容(PDF)存档于5 October 2013).