APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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