APA (7th ed.) Citation

Regional Science Association. British Section, Hudson, R., & Lewis, R. (1982). Regional planning in Europe. Pion.

Chicago Style (17th ed.) Citation

Regional Science Association. British Section, Ray Hudson, and Roy Lewis. Regional Planning in Europe. London: Pion, 1982.

MLA (9th ed.) Citation

Regional Science Association. British Section, et al. Regional Planning in Europe. Pion, 1982.