APA (7th ed.) Citation

Middleton, E. C. (1917). Airfare of to-day and of the future. Constable.

Chicago Style (17th ed.) Citation

Middleton, Edgar C. Airfare of To-day and of the Future. London: Constable, 1917.

MLA (9th ed.) Citation

Middleton, Edgar C. Airfare of To-day and of the Future. Constable, 1917.

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