APA (7th ed.) Citation

Great Britain. Department of the Environment. (1993). Air pollution & tree health in the United Kingdom. HMSO.

Chicago Style (17th ed.) Citation

Great Britain. Department of the Environment. Air Pollution & Tree Health in the United Kingdom. London: HMSO, 1993.

MLA (9th ed.) Citation

Great Britain. Department of the Environment. Air Pollution & Tree Health in the United Kingdom. HMSO, 1993.

Warning: These citations may not always be 100% accurate.