APA (7th ed.) Citation

Great Britain. Forestry Commission, Arboricultural Association, & Hodge, S. J. (1991). Research for practical arboriculture. HMSO.

Chicago Style (17th ed.) Citation

Great Britain. Forestry Commission, Arboricultural Association, and S. J. Hodge. Research for Practical Arboriculture. London: HMSO, 1991.

MLA (9th ed.) Citation

Great Britain. Forestry Commission, et al. Research for Practical Arboriculture. HMSO, 1991.