APA (7th ed.) Citation

Local Government Information Unit (London, England), & Great Britain. Ordnance Survey. (2014). 2014 political control local authorities map. [Hemming Information Services].

Chicago Style (17th ed.) Citation

Local Government Information Unit (London, England), and Great Britain. Ordnance Survey. 2014 Political Control Local Authorities Map. [London]: [Hemming Information Services], 2014.

MLA (9th ed.) Citation

Local Government Information Unit (London, England), and Great Britain. Ordnance Survey. 2014 Political Control Local Authorities Map. [Hemming Information Services], 2014.