APA

Department of the Environment [HMSO], . (1976). Production of aggregates in Great Britain 1973 and 1974. London: Department of the Environment [HMSO].

Chicago

Department of the Environment [HMSO], . 1976. Production of aggregates in Great Britain 1973 and 1974. London: Department of the Environment [HMSO].

Harvard

Department of the Environment [HMSO], . (1976). Production of aggregates in Great Britain 1973 and 1974. London: Department of the Environment [HMSO].

MLA

Department of the Environment [HMSO], . Production of aggregates in Great Britain 1973 and 1974. London: Department of the Environment [HMSO]. 1976.