Great Britain. Department of the Environment, Great Britain. Scottish Office, & Great Britain. Welsh Office. (1991). Processes prescribed for air pollution control by local authorities : Secretary of State's guidance: Secretary of State's guidance. HMSO.
Chicago Style (17th ed.) CitationGreat Britain. Department of the Environment, Great Britain. Scottish Office, and Great Britain. Welsh Office. Processes Prescribed for Air Pollution Control by Local Authorities : Secretary of State's Guidance: Secretary of State's Guidance. London: HMSO, 1991.
MLA (9th ed.) CitationGreat Britain. Department of the Environment, et al. Processes Prescribed for Air Pollution Control by Local Authorities : Secretary of State's Guidance: Secretary of State's Guidance. HMSO, 1991.
Warning: These citations may not always be 100% accurate.