توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

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..

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Great Britain. Dept. of the Environment و 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.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Great Britain. Dept. of the Environment و 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.