APA (7th ed.) Citation

British Library, Great Britain. War Office, & Jewitt, A. C. (1992). Maps for empire: The first 2,000 numbered War Office maps, 1881-1905. British Library.

Chicago Style (17th ed.) Citation

British Library, Great Britain. War Office, and A. Crispin Jewitt. Maps for Empire: The First 2,000 Numbered War Office Maps, 1881-1905. London: British Library, 1992.

MLA (9th ed.) Citation

British Library, et al. Maps for Empire: The First 2,000 Numbered War Office Maps, 1881-1905. British Library, 1992.