APA (7th ed.) Citation

Schonfield, H. J. (1939). The Suez canal. Penguin.

Chicago Style (17th ed.) Citation

Schonfield, Hugh J. The Suez Canal. Harmondsworth, Eng.: Penguin, 1939.

MLA (8th ed.) Citation

Schonfield, Hugh J. The Suez Canal. Penguin, 1939.