APA (7th ed.) Citation

Great Britain. Directorate of Military Survey & Great Britain. Ordnance Survey. (1974). East Anglia. Ordnance Survey.

Chicago Style (17th ed.) Citation

Great Britain. Directorate of Military Survey and Great Britain. Ordnance Survey. East Anglia. [London]: Ordnance Survey, 1974.

MLA (9th ed.) Citation

Great Britain. Directorate of Military Survey and Great Britain. Ordnance Survey. East Anglia. Ordnance Survey, 1974.