Dyfyniad APA

Royal Commission on Environmental Pollution. (1974). Fourth report - Pollution control: Progress and problems. HMSO.

Dyfyniad Arddull Chicago

Royal Commission on Environmental Pollution. Fourth Report - Pollution Control: Progress and Problems. London: HMSO, 1974.

Dyfyniad MLA

Royal Commission on Environmental Pollution. Fourth Report - Pollution Control: Progress and Problems. HMSO, 1974.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.