Marsh, T; Hannaford, J, eds. (2008). UK Hydrometric Register(PDF). Hydrological data UK series. Wallingford, Oxfordshire: Centre for Ecology & Hydrology. ISBN978-0-9557672-2-7. Archived from the original(PDF) on 5 اكتبر 2013. Retrieved 21 July 2017. {{cite book}}: Check date values in: |archive-date= (help)
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Marsh, T; Hannaford, J, eds. (2008). UK Hydrometric Register(PDF). Hydrological data UK series. Wallingford, Oxfordshire: Centre for Ecology & Hydrology. ISBN978-0-9557672-2-7. Archived from the original(PDF) on 5 اكتبر 2013. Retrieved 21 July 2017. {{cite book}}: Check date values in: |archive-date= (help)