APA (7th ed.) Citation

Henry Blacklock & Co. (1946). Bradshaw's map of European air routes. Published by the proprietors of Bradshaw's British and International Air Guide [Henry Blacklock & Co.].

Chicago Style (17th ed.) Citation

Henry Blacklock & Co. Bradshaw's Map of European Air Routes. London: Published by the proprietors of Bradshaw's British and International Air Guide [Henry Blacklock & Co.], 1946.

MLA (8th ed.) Citation

Henry Blacklock & Co. Bradshaw's Map of European Air Routes. Published by the proprietors of Bradshaw's British and International Air Guide [Henry Blacklock & Co.], 1946.