APA (7th ed.) Citation

Childers, E. (1955). The riddle of the sands: A record of secret service. R.Hart-Davis.

Chicago Style (17th ed.) Citation

Childers, Erskine. The Riddle of the Sands: A Record of Secret Service. London: R.Hart-Davis, 1955.

MLA (9th ed.) Citation

Childers, Erskine. The Riddle of the Sands: A Record of Secret Service. R.Hart-Davis, 1955.