Great Britain. Standing Committee on the Disposal of Sewage Sludge & Great Britain. Standing Committee on the Disposal of Sewage Sludge. (1978). Sewage sludge disposal data and reviews of disposal to sea. Dept. of the Environment : Available only from National Water Council.
Παραπομπή σε μορφή Chicago (17η εκδ.)Great Britain. Standing Committee on the Disposal of Sewage Sludge και Great Britain. Standing Committee on the Disposal of Sewage Sludge. Sewage Sludge Disposal Data and Reviews of Disposal to Sea. London: Dept. of the Environment : Available only from National Water Council, 1978.
Παραπομπή σε μορφή MLA (8th εκδ.)Great Britain. Standing Committee on the Disposal of Sewage Sludge και Great Britain. Standing Committee on the Disposal of Sewage Sludge. Sewage Sludge Disposal Data and Reviews of Disposal to Sea. Dept. of the Environment : Available only from National Water Council, 1978.