Great Britain. Dept. of the Environment & Great Britain. Welsh Office. (1975). River pollution survey of England and Wales, updated 1973: River quality and discharges of sewage and industrial effluents. H.M.S.O..
Citação norma ChicagoGreat Britain. Dept. of the Environment and Great Britain. Welsh Office. River Pollution Survey of England and Wales, Updated 1973: River Quality and Discharges of Sewage and Industrial Effluents. London: H.M.S.O., 1975.
Citação norma MLAGreat Britain. Dept. of the Environment and Great Britain. Welsh Office. River Pollution Survey of England and Wales, Updated 1973: River Quality and Discharges of Sewage and Industrial Effluents. H.M.S.O., 1975.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.