APA (7th ed.) Citation

Salt, A. E. W. (1930). Imperial air routes. Murray.

Chicago Style (17th ed.) Citation

Salt, A. E. W. Imperial Air Routes. London: Murray, 1930.

MLA (9th ed.) Citation

Salt, A. E. W. Imperial Air Routes. Murray, 1930.

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