APA (7th ed.) Citation

Great Britain. Government Office for London, Great Britain. Office for National Statistics, & London Research Centre. Focus on London. Stationery Office.

Chicago Style (17th ed.) Citation

Great Britain. Government Office for London, Great Britain. Office for National Statistics, and London Research Centre. Focus on London. London: Stationery Office.

MLA (9th ed.) Citation

Great Britain. Government Office for London, et al. Focus on London. Stationery Office.

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